[1] Excretion in Hemichordates takes place by -
A.
Glomerulus
B.
Pronephron
C.
Mesortephron
D.
Metanephron
Ans:
Glomerulus
Explanation :
The glomerulus functions as an excretory organ in hemichordates. Soluble wastes are collected from the blood by the glomerulus, lying within the proboscis cavity, and excreted from that cavity through a dorsal pore (an opening on the upper side) to the outside.
[2] The highest concentration of urea is found in -
A.
Hepatic portal vein
B.
Dorsal aorta
C.
Hepatic vein
D.
Renal vein
Ans:
Hepatic vein
Explanation :
The liver produces urea and other waste materials and then it pours it all in the right ventricle of the heart for oxygenation. The heart then distributes the blood to various parts of the body. So the impure blood brought by the Hepatic Vein and other blood vessels gets distributed through the aorta. This clearly indicates that hepatic vein carries the largest amount of urea, while the renal vein carries the least.
[3] 'Mission Indradhanush' Campaign in India is associated with -
A.
Nutrition to Pregnant Women
B.
Awareness of Diabetes
C.
Eradication of blindness
D.
Vaccination of children
Ans:
Vaccination of children
Explanation :
Mission Indradhanush is a government of India initiative to ensure full immunization of all children in India. It aims to immunize all children under the age of 2 years, as well as all pregnant women, against seven vaccine preventable diseases of diphtheria, whooping cough, tetanus, poliomyelitis, tuberculosis, measles and Hepatitis B.
[4] Which cell disorder in our body is responsible for colour blindness?
A.
WBC
B.
Cone cell
C.
Red Cell
D.
Neuron
Ans:
Cone cell
Explanation :
Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that is responsible for colour vision and function best in relatively bright lights.
[5] Which cell organelle is the site of photosynthesis and also contains chlorophyll?
A.
chloroplasts
B.
vacuole
C.
cytoplasm
D.
nucleolus
Ans:
chloroplasts
Explanation :
Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food (glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls a and b that absorb visible light energy and convert it to usable chemical energy in photosynthesis.
[6] Highest source of air pollution in the world is -
A.
Automobiles
B.
Industries
C.
Household wastes
D.
Aircraft
Ans:
Automobiles
Explanation :
According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
[7] What is commonly known as 'white plague'?
A.
Typhoid
B.
Malaria
C.
Tuberculosis
D.
Plague
Ans:
Tuberculosis
Explanation :
Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung.
[8] Which of the digestive organs contains acid?
A.
Stomach
B.
Small intestine
C.
Appendix
D.
Colon
Ans:
Small intestine
Explanation :
Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
[9] Haemophilia is a kind of disease which is -
A.
viral
B.
bacterial
C.
hereditary
D.
fungal
Ans:
hereditary
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
The glomerulus functions as an excretory organ in hemichordates. Soluble wastes are collected from the blood by the glomerulus, lying within the proboscis cavity, and excreted from that cavity through a dorsal pore (an opening on the upper side) to the outside.
[2] The highest concentration of urea is found in -
A.
Hepatic portal vein
B.
Dorsal aorta
C.
Hepatic vein
D.
Renal vein
Ans:
Hepatic vein
Explanation :
The liver produces urea and other waste materials and then it pours it all in the right ventricle of the heart for oxygenation. The heart then distributes the blood to various parts of the body. So the impure blood brought by the Hepatic Vein and other blood vessels gets distributed through the aorta. This clearly indicates that hepatic vein carries the largest amount of urea, while the renal vein carries the least.
[3] 'Mission Indradhanush' Campaign in India is associated with -
A.
Nutrition to Pregnant Women
B.
Awareness of Diabetes
C.
Eradication of blindness
D.
Vaccination of children
Ans:
Vaccination of children
Explanation :
Mission Indradhanush is a government of India initiative to ensure full immunization of all children in India. It aims to immunize all children under the age of 2 years, as well as all pregnant women, against seven vaccine preventable diseases of diphtheria, whooping cough, tetanus, poliomyelitis, tuberculosis, measles and Hepatitis B.
[4] Which cell disorder in our body is responsible for colour blindness?
A.
WBC
B.
Cone cell
C.
Red Cell
D.
Neuron
Ans:
Cone cell
Explanation :
Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that is responsible for colour vision and function best in relatively bright lights.
[5] Which cell organelle is the site of photosynthesis and also contains chlorophyll?
A.
chloroplasts
B.
vacuole
C.
cytoplasm
D.
nucleolus
Ans:
chloroplasts
Explanation :
Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food (glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls a and b that absorb visible light energy and convert it to usable chemical energy in photosynthesis.
[6] Highest source of air pollution in the world is -
A.
Automobiles
B.
Industries
C.
Household wastes
D.
Aircraft
Ans:
Automobiles
Explanation :
According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
[7] What is commonly known as 'white plague'?
A.
Typhoid
B.
Malaria
C.
Tuberculosis
D.
Plague
Ans:
Tuberculosis
Explanation :
Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung.
[8] Which of the digestive organs contains acid?
A.
Stomach
B.
Small intestine
C.
Appendix
D.
Colon
Ans:
Small intestine
Explanation :
Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
[9] Haemophilia is a kind of disease which is -
A.
viral
B.
bacterial
C.
hereditary
D.
fungal
Ans:
hereditary
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Mission Indradhanush is a government of India initiative to ensure full immunization of all children in India. It aims to immunize all children under the age of 2 years, as well as all pregnant women, against seven vaccine preventable diseases of diphtheria, whooping cough, tetanus, poliomyelitis, tuberculosis, measles and Hepatitis B.
[4] Which cell disorder in our body is responsible for colour blindness?
A.
WBC
B.
Cone cell
C.
Red Cell
D.
Neuron
Ans:
Cone cell
Explanation :
Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that is responsible for colour vision and function best in relatively bright lights.
[5] Which cell organelle is the site of photosynthesis and also contains chlorophyll?
A.
chloroplasts
B.
vacuole
C.
cytoplasm
D.
nucleolus
Ans:
chloroplasts
Explanation :
Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food (glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls a and b that absorb visible light energy and convert it to usable chemical energy in photosynthesis.
[6] Highest source of air pollution in the world is -
A.
Automobiles
B.
Industries
C.
Household wastes
D.
Aircraft
Ans:
Automobiles
Explanation :
According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
[7] What is commonly known as 'white plague'?
A.
Typhoid
B.
Malaria
C.
Tuberculosis
D.
Plague
Ans:
Tuberculosis
Explanation :
Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung.
[8] Which of the digestive organs contains acid?
A.
Stomach
B.
Small intestine
C.
Appendix
D.
Colon
Ans:
Small intestine
Explanation :
Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
[9] Haemophilia is a kind of disease which is -
A.
viral
B.
bacterial
C.
hereditary
D.
fungal
Ans:
hereditary
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food (glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls a and b that absorb visible light energy and convert it to usable chemical energy in photosynthesis.
[6] Highest source of air pollution in the world is -
A.
Automobiles
B.
Industries
C.
Household wastes
D.
Aircraft
Ans:
Automobiles
Explanation :
According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
[7] What is commonly known as 'white plague'?
A.
Typhoid
B.
Malaria
C.
Tuberculosis
D.
Plague
Ans:
Tuberculosis
Explanation :
Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung.
[8] Which of the digestive organs contains acid?
A.
Stomach
B.
Small intestine
C.
Appendix
D.
Colon
Ans:
Small intestine
Explanation :
Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
[9] Haemophilia is a kind of disease which is -
A.
viral
B.
bacterial
C.
hereditary
D.
fungal
Ans:
hereditary
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung.
[8] Which of the digestive organs contains acid?
A.
Stomach
B.
Small intestine
C.
Appendix
D.
Colon
Ans:
Small intestine
Explanation :
Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role in digestion of proteins, by activating digestive enzymes.
[9] Haemophilia is a kind of disease which is -
A.
viral
B.
bacterial
C.
hereditary
D.
fungal
Ans:
hereditary
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes.
[10] The largest gland in the Human body is -
A.
Liver
B.
Pancreas
C.
Kidney
D.
Pituitary
Ans:
Liver
Explanation :
The liver is the largest gland and the largest internal organ in the human body.
[11] Which of the following green house gases has the greatest heat trapping ability?
A.
Chlorofluoro carbon
B.
Methane
C.
Carbon dioxide
D.
Nitrous oxide
Ans:
Chlorofluoro carbon
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
[12] What is a Pepper plant?
A.
Bush
B.
Shrub
C.
Vine
D.
Tree
Ans:
Vine
Explanation :
Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves.
[13] Among the following which one lays eggs and does not produce young ones directly?
A.
Echidna
B.
Kangaroo
C.
Porcupine
D.
Whale
Ans:
Echidna
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly.
[14] The sigmoid colon is a part of -
A.
Small Intestine
B.
Large Intestine
C.
Pharynx
D.
Rectum
Ans:
Large Intestine
Explanation :
The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its function is to expel solid and gaseous waste from the gastrointestinal tract.
[15] The connective tissue that connects a muscle to a bone is -
A.
Cartilage
B.
Ligament
C.
Tendon
D.
Interstitial fluid
Ans:
Tendon
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
[16] BCG is vaccine meant for protection against which of the following diseases?
A.
Mumps
B.
Tuberculosis
C.
Leprosy
D.
Tetanus
Ans:
Tuberculosis
Explanation :
Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system,
[17] What is cultivation of trees, in dwarf form?
A.
Bonsai
B.
Ikebana
C.
Dwarfism
D.
Etiolation
Ans:
Bonsai
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Bonsai is the Japanese art of growing dwarf trees. By contrast with other plant cultivation practices, bonsai is not intended for production of food or for medicine. Instead, bonsai practice focuses on long- term cultivation and shaping of one or more small trees growing in a container. Bonsai uses cultivation techniques like pruning, root reduction, potting, defoliation, and grafting to produce small trees that mimic the shape and style of mature, full-size trees.
[18] What are Aldehydes?
A.
Mild oxidising agents
B.
Strong oxidising agents
C.
Strong reducing agents
D.
Mild reducing agents
Ans:
Strong reducing agents
Explanation :
Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents.
[19] 'Antibodies', which protect our body from infections, are which type of compounds?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Vitamins
Ans:
Proteins
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Antibodies are large Y-shaped proteins that are produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses.
[20] Pneumonia affects which of the following organs of human body?
A.
Kidneys
B.
Lungs
C.
Throat
D.
Liver
Ans:
Lungs
Explanation :
Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli.
[21] Which of the following fibres is considered as the stron est natural fibre?
A.
Cotton
B.
Jute
C.
Wool
D.
Silk
Ans:
Silk
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey.
[22] Potato is a -
A.
Root
B.
Stem
C.
Bud
D.
Fruit
Ans:
Stem
Explanation :
Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants.
[23] What is contained in Chlorophyll?
A.
Sodium
B.
Potassium
C.
Manganese
D.
Magnesium
Ans:
Magnesium
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue.
[24] Why is Carbon Monoxide a pollutant?
A.
Reacts with haemoglobin
B.
Makes nervous system inactive
C.
It reacts with Oxygen
D.
It inhibits glycolysis
Ans:
Reacts with haemoglobin
Explanation :
Carbon monoxide (CO) is considered a pollutant since it is toxic to hemoglobic animals (including humans) when encountered in concentrations above about 35 ppm. It combines with hemoglobin to produce carboxyhemoglobin, which usurps the space in hemoglobin that normally canies oxygen, but is ineffective for delivering oxygen to bodily tissues. A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.
[25] Which of the following is an emergency hormone in humans?
A.
Thyroxine
B.
Insulin
C.
Adrenalin
D.
Progestrone
Ans:
Adrenalin
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.
Explanation :
Adrenaline is known as the emergency hormone because it is released by the adrenal glands under the conditions of stress or excitement. It is also a part of the body's stress response called the fight or flight response. Adrenaline performs various functions in the body such as : • Increasing the supply of oxygen and glucose to muscles and brain; • Increasing the heart rate and the amount of blood pumped by heart per beat; • Dilating the air passages and constricts the blood vessels.