[1] Which of the following mammals lay eggs?
A.
Bat
B.
Whale
C.
Weasel
D.
Platypus
Ans:
Platypus
Explanation :
The platypus, also known as the duck-billed platypus, is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth.
[2] Chlorophyll containing autotrophic thallophytes is called as -
A.
Algae
B.
Lichens
C.
Fung
D.
Bryophytes
Ans:
Algae
Explanation :
Algae are chlorophyll (green pigment) containing thallophytes. They prepare their own food and are thus autotrophic in their mode of nutrition.
[3] 'Table sugar' is which type of sugar?
A.
Fructose
B.
Galactose
C.
Glucose
D.
Sucrose
Ans:
Sucrose
Explanation :
Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. A white, odorless, crystalline powder with a sweet taste, it is best known for its role in food.
[4] Where does the cabbage store food?
A.
Leaves
B.
Stem
C.
Fruit
D.
Root
Ans:
Leaves
Explanation :
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
[5] Anemia is related to _.
A.
iodine deficiency
B.
calcium deficiency
C.
iron deficiency
D.
food poisoning
Ans:
iron deficiency
Explanation :
The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).
[6] 'Breakbone fever' most commonly known as?
A.
Typhoid
B.
Rhinitis
C.
Yellow fever
D.
Dengue
Ans:
Dengue
Explanation :
Dengue is also called “breakbone fever” or “dandy fever”, because the aches in the bones of the patients can be very severe. The word “dandy” came about because in the past, slaves in Honduras were in such pain that their posture and gait were altered. In fact, Honduras is in a state of emergency right now over a dengue outbreak which killed several people.
[7] Decoding and interpretation of visual information in brain is associated with -
A.
Frontal lobe
B.
Occipital lobe
C.
Temporal lobe
D.
Parietal lobe
Ans:
Temporal lobe
Explanation :
Temporal lobe is associated with decoding nonverbal patterns, visual decoding, interpreting and remembering visual information. The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
[8] The food in Onion is stored in the form of -
A.
Cellulose
B.
Protein
C.
Starch
D.
Sugar
Ans:
Sugar
Explanation :
Bulbs like garlic and onion store food in the form of sugar (sucrose) rather than starch. This is also true of sugar beet, sugarcane, etc. In onions, the food is stored in leaves. However, in most plants, starch is stored as food. Cellulose is not a food for plants but a building material.
[9] Which light is least effective in photosynthesis?
A.
Blue light
B.
Green light
C.
Red light
D.
Sunlight
Ans:
Green light
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
The platypus, also known as the duck-billed platypus, is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth.
[2] Chlorophyll containing autotrophic thallophytes is called as -
A.
Algae
B.
Lichens
C.
Fung
D.
Bryophytes
Ans:
Algae
Explanation :
Algae are chlorophyll (green pigment) containing thallophytes. They prepare their own food and are thus autotrophic in their mode of nutrition.
[3] 'Table sugar' is which type of sugar?
A.
Fructose
B.
Galactose
C.
Glucose
D.
Sucrose
Ans:
Sucrose
Explanation :
Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. A white, odorless, crystalline powder with a sweet taste, it is best known for its role in food.
[4] Where does the cabbage store food?
A.
Leaves
B.
Stem
C.
Fruit
D.
Root
Ans:
Leaves
Explanation :
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
[5] Anemia is related to _.
A.
iodine deficiency
B.
calcium deficiency
C.
iron deficiency
D.
food poisoning
Ans:
iron deficiency
Explanation :
The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).
[6] 'Breakbone fever' most commonly known as?
A.
Typhoid
B.
Rhinitis
C.
Yellow fever
D.
Dengue
Ans:
Dengue
Explanation :
Dengue is also called “breakbone fever” or “dandy fever”, because the aches in the bones of the patients can be very severe. The word “dandy” came about because in the past, slaves in Honduras were in such pain that their posture and gait were altered. In fact, Honduras is in a state of emergency right now over a dengue outbreak which killed several people.
[7] Decoding and interpretation of visual information in brain is associated with -
A.
Frontal lobe
B.
Occipital lobe
C.
Temporal lobe
D.
Parietal lobe
Ans:
Temporal lobe
Explanation :
Temporal lobe is associated with decoding nonverbal patterns, visual decoding, interpreting and remembering visual information. The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
[8] The food in Onion is stored in the form of -
A.
Cellulose
B.
Protein
C.
Starch
D.
Sugar
Ans:
Sugar
Explanation :
Bulbs like garlic and onion store food in the form of sugar (sucrose) rather than starch. This is also true of sugar beet, sugarcane, etc. In onions, the food is stored in leaves. However, in most plants, starch is stored as food. Cellulose is not a food for plants but a building material.
[9] Which light is least effective in photosynthesis?
A.
Blue light
B.
Green light
C.
Red light
D.
Sunlight
Ans:
Green light
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. A white, odorless, crystalline powder with a sweet taste, it is best known for its role in food.
[4] Where does the cabbage store food?
A.
Leaves
B.
Stem
C.
Fruit
D.
Root
Ans:
Leaves
Explanation :
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
[5] Anemia is related to _.
A.
iodine deficiency
B.
calcium deficiency
C.
iron deficiency
D.
food poisoning
Ans:
iron deficiency
Explanation :
The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).
[6] 'Breakbone fever' most commonly known as?
A.
Typhoid
B.
Rhinitis
C.
Yellow fever
D.
Dengue
Ans:
Dengue
Explanation :
Dengue is also called “breakbone fever” or “dandy fever”, because the aches in the bones of the patients can be very severe. The word “dandy” came about because in the past, slaves in Honduras were in such pain that their posture and gait were altered. In fact, Honduras is in a state of emergency right now over a dengue outbreak which killed several people.
[7] Decoding and interpretation of visual information in brain is associated with -
A.
Frontal lobe
B.
Occipital lobe
C.
Temporal lobe
D.
Parietal lobe
Ans:
Temporal lobe
Explanation :
Temporal lobe is associated with decoding nonverbal patterns, visual decoding, interpreting and remembering visual information. The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
[8] The food in Onion is stored in the form of -
A.
Cellulose
B.
Protein
C.
Starch
D.
Sugar
Ans:
Sugar
Explanation :
Bulbs like garlic and onion store food in the form of sugar (sucrose) rather than starch. This is also true of sugar beet, sugarcane, etc. In onions, the food is stored in leaves. However, in most plants, starch is stored as food. Cellulose is not a food for plants but a building material.
[9] Which light is least effective in photosynthesis?
A.
Blue light
B.
Green light
C.
Red light
D.
Sunlight
Ans:
Green light
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).
[6] 'Breakbone fever' most commonly known as?
A.
Typhoid
B.
Rhinitis
C.
Yellow fever
D.
Dengue
Ans:
Dengue
Explanation :
Dengue is also called “breakbone fever” or “dandy fever”, because the aches in the bones of the patients can be very severe. The word “dandy” came about because in the past, slaves in Honduras were in such pain that their posture and gait were altered. In fact, Honduras is in a state of emergency right now over a dengue outbreak which killed several people.
[7] Decoding and interpretation of visual information in brain is associated with -
A.
Frontal lobe
B.
Occipital lobe
C.
Temporal lobe
D.
Parietal lobe
Ans:
Temporal lobe
Explanation :
Temporal lobe is associated with decoding nonverbal patterns, visual decoding, interpreting and remembering visual information. The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
[8] The food in Onion is stored in the form of -
A.
Cellulose
B.
Protein
C.
Starch
D.
Sugar
Ans:
Sugar
Explanation :
Bulbs like garlic and onion store food in the form of sugar (sucrose) rather than starch. This is also true of sugar beet, sugarcane, etc. In onions, the food is stored in leaves. However, in most plants, starch is stored as food. Cellulose is not a food for plants but a building material.
[9] Which light is least effective in photosynthesis?
A.
Blue light
B.
Green light
C.
Red light
D.
Sunlight
Ans:
Green light
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Temporal lobe is associated with decoding nonverbal patterns, visual decoding, interpreting and remembering visual information. The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
[8] The food in Onion is stored in the form of -
A.
Cellulose
B.
Protein
C.
Starch
D.
Sugar
Ans:
Sugar
Explanation :
Bulbs like garlic and onion store food in the form of sugar (sucrose) rather than starch. This is also true of sugar beet, sugarcane, etc. In onions, the food is stored in leaves. However, in most plants, starch is stored as food. Cellulose is not a food for plants but a building material.
[9] Which light is least effective in photosynthesis?
A.
Blue light
B.
Green light
C.
Red light
D.
Sunlight
Ans:
Green light
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Green is the least effective colour of light in driving photosynthesis, the process of converting light energy into chemical energy. Photosynthesis occurs in plants and algae using chlorophyll, and because chlorophyll reflects rather than absorbs green light, green light cannot be used in the photosynthetic process.
[10] The maximum fixation of solar energy is done by -
A.
Bacteria
B.
Protozoa
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[11] The impact of Green Revolution was felt most in the case of -
A.
Wheat
B.
Rice
C.
Pulses
D.
Oil seed
Ans:
Wheat
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
The Green Revolution in India was a wheat-centric revolution that led to the higher-yielding varieties of wheat. The production of wheat increased by more than three times between 1967–68 and 2003– 04 while the overall increase in the production of cereals was only two times. On account of this, it is said that the Green Revolution in India is largely the Wheat Revolution.
[12] At which stage in its life cycle does the silkworm yield the fiber of commercial use -
A.
Larva
B.
Egg
C.
Pupa
D.
Imago
Ans:
Pupa
Explanation :
It is during the pupa or cocoon stage that the silkworm yields the fiber of commercial use. As the silkworm prepares to pupate, it spins a protective cocoon. About the size and color of a cotton ball, the cocoon is constructed from one continuous strand of silk, perhaps 1.5 km long (nearly a mile). The silk cocoon serves as protection for the pupa.
[13] Lichen is an association between which of the two?
A.
Algae and fungus
B.
Algae and tree
C.
Fungus and tree
D.
Bacteria and legume plant
Ans:
Algae and fungus
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
A lichen is an organism that is formed by the symbiotic association of a fungus and an algae or cyanobacterium. It occurs as crusty patches or bushy growths on tree trunks, bare ground, etc. The properties are sometimes plant-like, but lichens are not plants.
[14] Among the given nutrients, milk is a poor source of which of the following?
A.
Vitamin 'C'
B.
Calcium
C.
Protein
D.
Carbohydrate
Ans:
Vitamin 'C'
Explanation :
Milk is a poor source of ascorbic acid (Vitamin C). It contains about 1 mg ascorbate per 100 g. Even the little Vitamin C is usually destroyed when the milk is heat treated. The richest sources of ascorbic acid are fruits and vegetables. Milk is a good source of retinol and thiamin.
[15] Which among the following has the maximum life span -
A.
Eagle
B.
Tortoise
C.
Tiger
D.
Elephant
Ans:
Tortoise
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Tortoises generally have one of the longest lifespans of any animal. Some individuals are known to have lived longer than 150 years. Galapagos giant tortoise has life span of 190 years. Because of this, they symbolize longevity in some cultures, such as China.
[16] Which one of the following is a water soluble vitamins?
A.
A
B.
C
C.
K
D.
D
Ans:
C
Explanation :
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
[17] Which one can imitate human speech?
A.
whale
B.
dolphin
C.
ape
D.
bear
Ans:
dolphin
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Animals that are able to talk like humans are all “vocal learners,” BBC explains. They hear sounds and learn how to imitate them. Besides humans, some of the most skilled vocal learners include parrots, songbirds, dolphins, and beluga whales.
[18] What is called sunshine vitamin?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Ans:
Vitamin D
Explanation :
Vitamin D is called "the sunshine vitamin" because our skin makes it when it is exposed to UVB radiation from sunlight.
[19] The virus of AIDS affects the growth of -
A.
Haemoglobin
B.
RBCs in blood
C.
T cells in blood
D.
Grey cells in brain
Ans:
T cells in blood
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
[20] Gustation refers to the sense of which of the following?
A.
Smell
B.
Hearing
C.
Tactile
D.
Taste
Ans:
Taste
Explanation :
Gustation is usually called the sense of taste. Taste is the sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue.Taste cells are gathered together in taste buds on the tongue, and taste buds are hidden in bumps on the tongue called papillae.
[21] Which enzyme is present in all members of the animal kingdom except Protozoa?
A.
Insulin
B.
Pepsin
C.
Renin
D.
Amylase
Ans:
Amylase
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. However, protozoa lack amylase which is required for the digestion of fats and starch. It is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.
[22] The most serious air pollutant causing health hazard is -
A.
Sulphur dioxide
B.
Carbon monoxide
C.
Ozone
D.
Nitrogen oxide
Ans:
Sulphur dioxide
Explanation :
Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.
[23] The antibiotic penicillin is obtained from which of the following?
A.
synthetic process
B.
a bacterium
C.
fungus
D.
virus infected cells
Ans:
fungus
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
[24] DPT vaccine is categorized as which of the following?
A.
Anti viral vaccine
B.
Anti protozoan vaccine
C.
Anti rickettsial vaccine
D.
A combined vaccine
Ans:
A combined vaccine
Explanation :
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
[25] Which is the sensory receptor involved in detecting blood pressure?
A.
Chemo receptor
B.
Mechano receptor
C.
Photo receptor
D.
Magneto receptor
Ans:
Mechano receptor
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.
Explanation :
Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.