[1] Generally insects respire through -
A.
Skin
B.
Gill
C.
Lung
D.
Spiracle
Ans:
Spiracle
Explanation :
Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.
[2] Which of the following foodcrops has the maximum content of proteins?
A.
Cassava
B.
Soyabean
C.
Wheat
D.
Maize
Ans:
Soyabean
Explanation :
Soybean is a significant and cheap source of protein for animal feeds and many prepackaged meals. Soybeans produce significantly more protein per acre than most other uses of land. The beans contain significant amounts of phytic acid, alpha-linolenic acid, and isoflavones. Together, soybean oil and protein content account for about 60% of dry soybeans by weight (protein at 40% and oil at 20%). The remainder consists of 35% carbohydrate and about 5% ash.
[3] Where did the new form of pneumonia “SARS” start?
A.
Canada
B.
Singapore
C.
China
D.
Thailand
Ans:
China
Explanation :
Severe acute respiratory syndrome (SARS) is a serious form of pneumonia. It is caused by a virus that was first identified in 2003. Infection with the SARS virus causes acute respiratory distress (severe breathing difficulty) and sometimes death. SARS was first seen in China. World Health Organization (WHO) physician Dr. Carlo Urbani identified SARS as a new disease in 2003. He diagnosed it in a 48-year- old businessman who had traveled from the Guangdong province of China, through Hong Kong, to Hanoi, Vietnam. The businessman and the doctor who first diagnosed SARS both died from the illness. There are normally thirty-three (33) vertebrae in humans, including the five that are fused to form the sacrum (the others are separated by intervertebral discs) and the four coccygeal bones that form the tailbone. The upper three regions comprise the remaining 24, and are grouped under the names cervical (7 vertebrae), thoracic (12 vertebrae) and lumbar (5 vertebrae), according to the regions they occupy.
[4] What is the chemical name of vitamin E?
A.
Calciferol
B.
Tocopherol
C.
Riboflavin
D.
Phylloquinone
Ans:
Tocopherol
Explanation :
Of the many different forms of vitamin E, gamma-tocopherol (γ-tocopherol) is the most common form found in the North American diet, but alpha-tocopherol (α-tocopherol) is the most biologically active.
[5] If an insect that feeds on feces sits on the food you are going to eat, you are most likely to be infected by which disease?
A.
Tuberculosis
B.
Cholera
C.
Typhoid
D.
Hepatitis B
Ans:
Typhoid
Explanation :
Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi.
[6] The causative organism of dengue fever is -
A.
Fungus
B.
Bacteria
C.
Protozoa
D.
Virus
Ans:
Virus
Explanation :
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in, bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is transmitted by several species of mosquito within the genus Aedes, principally A, aegypti.
[7] Which of the following is considered to be the best cholesterol?
A.
VLDL
B.
LDL
C.
HDL
D.
Triglycerids
Ans:
HDL
Explanation :
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease.
[8] Bleeding of gums and loosening of teeth is caused due to deficiency of-
A.
VitaminA
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin C
Explanation :
Scurvy is a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating.
[9] During photosynthesis in plants, the gas evolved is -
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Hydrogen
Ans:
Oxygen
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.
[2] Which of the following foodcrops has the maximum content of proteins?
A.
Cassava
B.
Soyabean
C.
Wheat
D.
Maize
Ans:
Soyabean
Explanation :
Soybean is a significant and cheap source of protein for animal feeds and many prepackaged meals. Soybeans produce significantly more protein per acre than most other uses of land. The beans contain significant amounts of phytic acid, alpha-linolenic acid, and isoflavones. Together, soybean oil and protein content account for about 60% of dry soybeans by weight (protein at 40% and oil at 20%). The remainder consists of 35% carbohydrate and about 5% ash.
[3] Where did the new form of pneumonia “SARS” start?
A.
Canada
B.
Singapore
C.
China
D.
Thailand
Ans:
China
Explanation :
Severe acute respiratory syndrome (SARS) is a serious form of pneumonia. It is caused by a virus that was first identified in 2003. Infection with the SARS virus causes acute respiratory distress (severe breathing difficulty) and sometimes death. SARS was first seen in China. World Health Organization (WHO) physician Dr. Carlo Urbani identified SARS as a new disease in 2003. He diagnosed it in a 48-year- old businessman who had traveled from the Guangdong province of China, through Hong Kong, to Hanoi, Vietnam. The businessman and the doctor who first diagnosed SARS both died from the illness. There are normally thirty-three (33) vertebrae in humans, including the five that are fused to form the sacrum (the others are separated by intervertebral discs) and the four coccygeal bones that form the tailbone. The upper three regions comprise the remaining 24, and are grouped under the names cervical (7 vertebrae), thoracic (12 vertebrae) and lumbar (5 vertebrae), according to the regions they occupy.
[4] What is the chemical name of vitamin E?
A.
Calciferol
B.
Tocopherol
C.
Riboflavin
D.
Phylloquinone
Ans:
Tocopherol
Explanation :
Of the many different forms of vitamin E, gamma-tocopherol (γ-tocopherol) is the most common form found in the North American diet, but alpha-tocopherol (α-tocopherol) is the most biologically active.
[5] If an insect that feeds on feces sits on the food you are going to eat, you are most likely to be infected by which disease?
A.
Tuberculosis
B.
Cholera
C.
Typhoid
D.
Hepatitis B
Ans:
Typhoid
Explanation :
Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi.
[6] The causative organism of dengue fever is -
A.
Fungus
B.
Bacteria
C.
Protozoa
D.
Virus
Ans:
Virus
Explanation :
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in, bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is transmitted by several species of mosquito within the genus Aedes, principally A, aegypti.
[7] Which of the following is considered to be the best cholesterol?
A.
VLDL
B.
LDL
C.
HDL
D.
Triglycerids
Ans:
HDL
Explanation :
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease.
[8] Bleeding of gums and loosening of teeth is caused due to deficiency of-
A.
VitaminA
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin C
Explanation :
Scurvy is a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating.
[9] During photosynthesis in plants, the gas evolved is -
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Hydrogen
Ans:
Oxygen
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Severe acute respiratory syndrome (SARS) is a serious form of pneumonia. It is caused by a virus that was first identified in 2003. Infection with the SARS virus causes acute respiratory distress (severe breathing difficulty) and sometimes death. SARS was first seen in China. World Health Organization (WHO) physician Dr. Carlo Urbani identified SARS as a new disease in 2003. He diagnosed it in a 48-year- old businessman who had traveled from the Guangdong province of China, through Hong Kong, to Hanoi, Vietnam. The businessman and the doctor who first diagnosed SARS both died from the illness. There are normally thirty-three (33) vertebrae in humans, including the five that are fused to form the sacrum (the others are separated by intervertebral discs) and the four coccygeal bones that form the tailbone. The upper three regions comprise the remaining 24, and are grouped under the names cervical (7 vertebrae), thoracic (12 vertebrae) and lumbar (5 vertebrae), according to the regions they occupy.
[4] What is the chemical name of vitamin E?
A.
Calciferol
B.
Tocopherol
C.
Riboflavin
D.
Phylloquinone
Ans:
Tocopherol
Explanation :
Of the many different forms of vitamin E, gamma-tocopherol (γ-tocopherol) is the most common form found in the North American diet, but alpha-tocopherol (α-tocopherol) is the most biologically active.
[5] If an insect that feeds on feces sits on the food you are going to eat, you are most likely to be infected by which disease?
A.
Tuberculosis
B.
Cholera
C.
Typhoid
D.
Hepatitis B
Ans:
Typhoid
Explanation :
Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi.
[6] The causative organism of dengue fever is -
A.
Fungus
B.
Bacteria
C.
Protozoa
D.
Virus
Ans:
Virus
Explanation :
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in, bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is transmitted by several species of mosquito within the genus Aedes, principally A, aegypti.
[7] Which of the following is considered to be the best cholesterol?
A.
VLDL
B.
LDL
C.
HDL
D.
Triglycerids
Ans:
HDL
Explanation :
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease.
[8] Bleeding of gums and loosening of teeth is caused due to deficiency of-
A.
VitaminA
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin C
Explanation :
Scurvy is a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating.
[9] During photosynthesis in plants, the gas evolved is -
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Hydrogen
Ans:
Oxygen
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi.
[6] The causative organism of dengue fever is -
A.
Fungus
B.
Bacteria
C.
Protozoa
D.
Virus
Ans:
Virus
Explanation :
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in, bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is transmitted by several species of mosquito within the genus Aedes, principally A, aegypti.
[7] Which of the following is considered to be the best cholesterol?
A.
VLDL
B.
LDL
C.
HDL
D.
Triglycerids
Ans:
HDL
Explanation :
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease.
[8] Bleeding of gums and loosening of teeth is caused due to deficiency of-
A.
VitaminA
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin C
Explanation :
Scurvy is a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating.
[9] During photosynthesis in plants, the gas evolved is -
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Hydrogen
Ans:
Oxygen
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease.
[8] Bleeding of gums and loosening of teeth is caused due to deficiency of-
A.
VitaminA
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin C
Explanation :
Scurvy is a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating.
[9] During photosynthesis in plants, the gas evolved is -
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Hydrogen
Ans:
Oxygen
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth, either directly, through primary production, or indirectly, as the ultimate source of the energy in their food.
[10] The science dealing with the study of teeth is -
A.
Odontology
B.
Ornithology
C.
Phenology
D.
Cosmology
Ans:
Odontology
Explanation :
Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistry or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA.
[11] The enzyme in whose presence glucose and fructose are converted into alcohol is -
A.
Diastase
B.
Maltase
C.
Invertase
D.
Zymase
Ans:
Zymase
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isomers) in presence of an enzyme called invertase.
[12] Which one of the following is the tallest bird?
A.
Peacock
B.
Penguin
C.
Ostrich
D.
Emu
Ans:
Ostrich
Explanation :
The largest living bird is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb).
[13] Anaemia occurs due to the deficiency of -
A.
riboflavin
B.
thiamine
C.
folic acid
D.
niacin
Ans:
folic acid
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to pcos (lack of oxygen) in organs.
[14] Which of the following diseases usually spreads through air?
A.
Plague
B.
'Typhoid
C.
Tuberculosis
D.
Cholera
Ans:
Tuberculosis
Explanation :
Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis.
[15] Cereals are a rich source of -
A.
Starch
B.
Glucose
C.
Fructose
D.
Maltose
Ans:
Starch
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin.
[16] The vitamin most readily destroyed by heat is -
A.
Riboflavin
B.
Ascorbic acid
C.
Tocopherol
D.
Thiamine
Ans:
Ascorbic acid
Explanation :
Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fruits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content.
[17] The process of producing energy in plants is known as -
A.
Absorption
B.
Reduction
C.
Photosynthesis
D.
Transpiration
Ans:
Photosynthesis
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
[18] Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
A.
Diencephalon
B.
Hypothalamus
C.
Cerebrum
D.
Control
Ans:
Cerebrum
Explanation :
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
[19] The poison of honey bee is :
A.
Acidic
B.
Alkaline
C.
Saltish
D.
Protein
Ans:
Acidic
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacula r it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.
[20] Birds which swim in water have -
A.
webbed feet
B.
broad wings
C.
long beaks
D.
toes with claws
Ans:
webbed feet
Explanation :
Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster!
[21] Liver-oil of fish is rich in -
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Ans:
Vitamin A
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega -3 fatty acids and Vitamin D.
[22] Which of the following does not provide any energy?
A.
Fats
B.
Proteins
C.
Vitamins
D.
Carbohydrates
Ans:
Vitamins
Explanation :
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
[23] Dialysis is used to perform the function of —
A.
Lungs
B.
Heart
C.
Liver
D.
Kidneys
Ans:
Kidneys
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function.
[24] Presticides are used to destroy -
A.
micro-organisms
B.
poisonous substances in soil
C.
poisonous plants
D.
insects
Ans:
insects
Explanation :
A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes.
[25] The tallest and thickest type of grass is -
A.
Alfalfa
B.
Fodder
C.
Bamboo
D.
Lichens
Ans:
Bamboo
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Explanation :
The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8-2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.