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- Question 1 of 20
1. Question
Assertion (A) : In human body, liver has important role in fat digestion.
Reason (R) : Liver produces two important fatdigesting enzymes. [2008]CorrectThe liver secretes bile that forms and stores glycogen and plays an important role in metabolism of protein and fat. It does not contain digestive enzymes and as such does not take part directly in digestion.
IncorrectThe liver secretes bile that forms and stores glycogen and plays an important role in metabolism of protein and fat. It does not contain digestive enzymes and as such does not take part directly in digestion.
UnattemptedThe liver secretes bile that forms and stores glycogen and plays an important role in metabolism of protein and fat. It does not contain digestive enzymes and as such does not take part directly in digestion.
- Question 2 of 20
2. Question
Among the following, which one lays eggs and does not produce young ones directly? [2008]
CorrectEchidna is a mammal that lay eggs.
IncorrectEchidna is a mammal that lay eggs.
UnattemptedEchidna is a mammal that lay eggs.
- Question 3 of 20
3. Question
The release of which one of the following into ponds and wells helps in controlling the mosquitoes? [2008]
CorrectGambusia affinis is a larvivorous fish. This fish is released into ponds and wells. It feeds on mosquito larvae, insects and crustaceans.
IncorrectGambusia affinis is a larvivorous fish. This fish is released into ponds and wells. It feeds on mosquito larvae, insects and crustaceans.
UnattemptedGambusia affinis is a larvivorous fish. This fish is released into ponds and wells. It feeds on mosquito larvae, insects and crustaceans.
- Question 4 of 20
4. Question
Among the following, which one is not an ape? [2008]
CorrectGibbon, Gorilla and Orangutan are apes, but Langur is not an ape, it is monkey.
IncorrectGibbon, Gorilla and Orangutan are apes, but Langur is not an ape, it is monkey.
UnattemptedGibbon, Gorilla and Orangutan are apes, but Langur is not an ape, it is monkey.
- Question 5 of 20
5. Question
In the context of genetic disorders, consider the following: [2009]
A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct?Correct
From the above graphical presentation we concluded that the son is the colourblind but the daughter is the carrier.IncorrectFrom the above graphical presentation we concluded that the son is the colourblind but the daughter is the carrier.UnattemptedFrom the above graphical presentation we concluded that the son is the colourblind but the daughter is the carrier. - Question 6 of 20
6. Question
In the context of Indian wild life, the flying fox is a [2009]
CorrectBats are commonly known as fruits bats or flying foxes. In India these are present in North-Eastern parts or in Andaman and Nicobar Islands.
IncorrectBats are commonly known as fruits bats or flying foxes. In India these are present in North-Eastern parts or in Andaman and Nicobar Islands.
UnattemptedBats are commonly known as fruits bats or flying foxes. In India these are present in North-Eastern parts or in Andaman and Nicobar Islands.
- Question 7 of 20
7. Question
With reference to the evolution of living organisms, which one of the following sequences is correct? [2009]
CorrectAccording to evolution of living organisms Salamander-Python-Kangaroo, because the evolution started from amphibians 350 million years ago, reptiles appeared 300 million years ago and 200 million years ago first small mammals appeared.
IncorrectAccording to evolution of living organisms Salamander-Python-Kangaroo, because the evolution started from amphibians 350 million years ago, reptiles appeared 300 million years ago and 200 million years ago first small mammals appeared.
UnattemptedAccording to evolution of living organisms Salamander-Python-Kangaroo, because the evolution started from amphibians 350 million years ago, reptiles appeared 300 million years ago and 200 million years ago first small mammals appeared.
- Question 8 of 20
8. Question
The Panda belongs to the same family as that of [2009]
CorrectPanda and bear belongs to family Ursidae. Pandas are medium sized bears. Of all the endangered bear species they have the most distinguished colour combination.
IncorrectPanda and bear belongs to family Ursidae. Pandas are medium sized bears. Of all the endangered bear species they have the most distinguished colour combination.
UnattemptedPanda and bear belongs to family Ursidae. Pandas are medium sized bears. Of all the endangered bear species they have the most distinguished colour combination.
- Question 9 of 20
9. Question
The marine animal called Dugong which is vulnerable to extinction is [2009]
CorrectDugong is a large marine mammal. Dugong has a fusiform body with no dorsal fin or hind limbs, instead of possessing paddle. Dugong is heavily dependent on seagrass for subsistence. Dugong bear one calf at a time after an approximately 13 month gestation.
IncorrectDugong is a large marine mammal. Dugong has a fusiform body with no dorsal fin or hind limbs, instead of possessing paddle. Dugong is heavily dependent on seagrass for subsistence. Dugong bear one calf at a time after an approximately 13 month gestation.
UnattemptedDugong is a large marine mammal. Dugong has a fusiform body with no dorsal fin or hind limbs, instead of possessing paddle. Dugong is heavily dependent on seagrass for subsistence. Dugong bear one calf at a time after an approximately 13 month gestation.
- Question 10 of 20
10. Question
Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine? [2010]
CorrectIt is difficult to develop an effective malaria vaccine, because repeated natural infection does not produce detectable resistance to exo-erythrocytic cycle of malaria in man.
IncorrectIt is difficult to develop an effective malaria vaccine, because repeated natural infection does not produce detectable resistance to exo-erythrocytic cycle of malaria in man.
UnattemptedIt is difficult to develop an effective malaria vaccine, because repeated natural infection does not produce detectable resistance to exo-erythrocytic cycle of malaria in man.
- Question 11 of 20
11. Question
Consider the following statements: [2010]
1. Hepatitis B is several times more infectious than HIV/AIDS
2. Hepatitis B can cause liver cancer
Which of the statements given above is/are correct?CorrectHepatitis-B is a potentially life-threatening liver infection caused by the hepatitis B virus. It can cause chronic liver disease and puts people at high risk of death from cirrhoris of liver and liver cancer.
Hepatitis-B virus is transmitted between people by contact with blood or other body fluid of an contact with the blood or other body fluid.IncorrectHepatitis-B is a potentially life-threatening liver infection caused by the hepatitis B virus. It can cause chronic liver disease and puts people at high risk of death from cirrhoris of liver and liver cancer.
Hepatitis-B virus is transmitted between people by contact with blood or other body fluid of an contact with the blood or other body fluid.UnattemptedHepatitis-B is a potentially life-threatening liver infection caused by the hepatitis B virus. It can cause chronic liver disease and puts people at high risk of death from cirrhoris of liver and liver cancer.
Hepatitis-B virus is transmitted between people by contact with blood or other body fluid of an contact with the blood or other body fluid. - Question 12 of 20
12. Question
At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us? [2011]
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct?CorrectHuman Genome Project is NOT at all limited to only genetic diseases. There are some 30K genes and the genome sequence would provide great help to build the tools to conquer diseases. Here we must note that all diseases have a genetic component, whether inherited (genetic) or resulting from the body’s response to environmental stresses like viruses or toxins. The successes of the HGP have even enabled researchers to pinpoint errors in genes–the smallest units of heredity–that cause or contribute to disease. Thus second statement stands correct.
IncorrectHuman Genome Project is NOT at all limited to only genetic diseases. There are some 30K genes and the genome sequence would provide great help to build the tools to conquer diseases. Here we must note that all diseases have a genetic component, whether inherited (genetic) or resulting from the body’s response to environmental stresses like viruses or toxins. The successes of the HGP have even enabled researchers to pinpoint errors in genes–the smallest units of heredity–that cause or contribute to disease. Thus second statement stands correct.
UnattemptedHuman Genome Project is NOT at all limited to only genetic diseases. There are some 30K genes and the genome sequence would provide great help to build the tools to conquer diseases. Here we must note that all diseases have a genetic component, whether inherited (genetic) or resulting from the body’s response to environmental stresses like viruses or toxins. The successes of the HGP have even enabled researchers to pinpoint errors in genes–the smallest units of heredity–that cause or contribute to disease. Thus second statement stands correct.
- Question 13 of 20
13. Question
Microbial fuel cells are considered a source of sustainable energy. Why? [2011]
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the following statements given above is/are correct?CorrectMicrobial fuel cells transform organic wastes directly into electricity through microbially catalyzed electrochemical reactions.
IncorrectMicrobial fuel cells transform organic wastes directly into electricity through microbially catalyzed electrochemical reactions.
UnattemptedMicrobial fuel cells transform organic wastes directly into electricity through microbially catalyzed electrochemical reactions.
- Question 14 of 20
14. Question
A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers? [2011]
1. The food products are not made out of hydrogenated oils.
2. The food products are not made out of animal fats/oils.
3. The oils used are not likely to damage the cardiovascular health of the consumers.
Which of the statements given above is/are correct?CorrectA type of trans fat occurs naturally in the milk and body fat of ruminants (such as cattle and sheep) at a level of 2–5% of total fat. Natural trans fats, which include conjugated linoleic acid (CLA) and vaccenic acid, originate in the rumen of these animals.
IncorrectA type of trans fat occurs naturally in the milk and body fat of ruminants (such as cattle and sheep) at a level of 2–5% of total fat. Natural trans fats, which include conjugated linoleic acid (CLA) and vaccenic acid, originate in the rumen of these animals.
UnattemptedA type of trans fat occurs naturally in the milk and body fat of ruminants (such as cattle and sheep) at a level of 2–5% of total fat. Natural trans fats, which include conjugated linoleic acid (CLA) and vaccenic acid, originate in the rumen of these animals.
- Question 15 of 20
15. Question
A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is? [2011]
CorrectThe blood group of the parents are AB and O; the biological child’s blood group may be A or B and since the boy is adopted and it is given in the question that “the blood group of the three sons are A+, B+, O+”.
IncorrectThe blood group of the parents are AB and O; the biological child’s blood group may be A or B and since the boy is adopted and it is given in the question that “the blood group of the three sons are A+, B+, O+”.
UnattemptedThe blood group of the parents are AB and O; the biological child’s blood group may be A or B and since the boy is adopted and it is given in the question that “the blood group of the three sons are A+, B+, O+”.
- Question 16 of 20
16. Question
Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?
CorrectOxidation reactions can produce free radicals. In turn, these radicals can start chain reactions. When the chain reaction occurs in a cell, it can cause damage or death. When the chain reaction occurs in a purified monomer, it produces a polymer resin, such as a plastic, a synthetic fibre, or an oil paint film. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions. They do this by being oxidized themselves, so antioxidants are often reducing agents such as thiols, ascorbic acid, orpolyphenols.
IncorrectOxidation reactions can produce free radicals. In turn, these radicals can start chain reactions. When the chain reaction occurs in a cell, it can cause damage or death. When the chain reaction occurs in a purified monomer, it produces a polymer resin, such as a plastic, a synthetic fibre, or an oil paint film. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions. They do this by being oxidized themselves, so antioxidants are often reducing agents such as thiols, ascorbic acid, orpolyphenols.
UnattemptedOxidation reactions can produce free radicals. In turn, these radicals can start chain reactions. When the chain reaction occurs in a cell, it can cause damage or death. When the chain reaction occurs in a purified monomer, it produces a polymer resin, such as a plastic, a synthetic fibre, or an oil paint film. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions. They do this by being oxidized themselves, so antioxidants are often reducing agents such as thiols, ascorbic acid, orpolyphenols.
- Question 17 of 20
17. Question
Which one of the following sets of elements was primarily responsible for the origin of life on the Earth? [2012]
CorrectCarbon, Hydrogen, Nitrogen.
IncorrectCarbon, Hydrogen, Nitrogen.
UnattemptedCarbon, Hydrogen, Nitrogen.
- Question 18 of 20
18. Question
Consider the following kinds of organisms: [2012]
1. Bat
2. Bee
3. Bird
Which of the above is/are pollinating agent/agents?CorrectAll of them are pollinating agents.
IncorrectAll of them are pollinating agents.
UnattemptedAll of them are pollinating agents.
- Question 19 of 20
19. Question
Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by [2013]
CorrectAflatoxins are produced by many species of Aspergillus, a fungus. Aspergillus Flavus and Aspergillus Parasiticus are weedy moulds that grow on a large number of substrates, in particular under high moisture conditions.
IncorrectAflatoxins are produced by many species of Aspergillus, a fungus. Aspergillus Flavus and Aspergillus Parasiticus are weedy moulds that grow on a large number of substrates, in particular under high moisture conditions.
UnattemptedAflatoxins are produced by many species of Aspergillus, a fungus. Aspergillus Flavus and Aspergillus Parasiticus are weedy moulds that grow on a large number of substrates, in particular under high moisture conditions.
- Question 20 of 20
20. Question
Which of the following adds/add nitrogen to the soil? [2013]
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct answer using the codes given below.CorrectExcretion of urea by animals adds nitrogen to the soil, as urea is the main nitrogen containing substance in the urine of mammals, therefore urea is widely used in fertilizers as the convenient source of nitrogen.
Death of vegetation adds up in soil organic matters including humus. As organic matters decompose inorganic nitrogen is released into the soil.IncorrectExcretion of urea by animals adds nitrogen to the soil, as urea is the main nitrogen containing substance in the urine of mammals, therefore urea is widely used in fertilizers as the convenient source of nitrogen.
Death of vegetation adds up in soil organic matters including humus. As organic matters decompose inorganic nitrogen is released into the soil.UnattemptedExcretion of urea by animals adds nitrogen to the soil, as urea is the main nitrogen containing substance in the urine of mammals, therefore urea is widely used in fertilizers as the convenient source of nitrogen.
Death of vegetation adds up in soil organic matters including humus. As organic matters decompose inorganic nitrogen is released into the soil.
From the above graphical presentation we concluded that the son is the colourblind but the daughter is the carrier.