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Q1. The theory of 'jumping genes' was propounded by
Correct answer : 3
Q2. The following scientists won Nobel Prizes for their contributions to science. Who among them won it twice?
Correct answer : 2
Q3. The photosynthetic activity of plants sustains all life on earth, including man. Who among the following scientists won a Nobel Prize for his contribution in this field?
Correct answer : 3
Q4. Tomato, brinjal, potato, tobacco, petunia, and night jasmine belong to
Correct answer : 4
Q5. Opium is a plant product obtained from
Correct answer : 2
Q6. A tissue primarily concerned with the formation of new cells is called
Correct answer : 3
Q7. Sucrose content in sugarcane decreases
Correct answer : 4
Q8. Fertile soil, suitable for growing common crops, is likely to have a pH value of
Correct answer : 3
Q9. The pairing of homologous chromosomes during prophase I of meiosis is called
Correct answer : 2
Q10. Match List I with List II and select the correct answer by using the codes given below the lists List I (Research Institutes) - List II (Location) A. Central Arid Zone Research Institute - 1. Jhansi
B. Central Research Institute for Dryland Agriculture - 2. Karnal C. Indian Grassland and Fodder Research Institute - 3. Jodhpur and Fodder Research Institute D. National Dairy Research Institute - 4. Hyderabad
Correct answer : 3
Q11. If a mouse over eight times its normal size has been produced by introducing human growth hormone gene, the technique involved is called
Correct answer : 4
Q12. Which one of the following approaches comes under the category of biotechnology?
Correct answer : 1
Q13. Haemophilia is a hereditary disease carried by
Correct answer : 3
Q14. Match List I with List II and select the correct answer by using the codes given below the lists.List I - List II A. white rust - 1. wheat B. red rot - 2. groundnut C. loose smut - 3. mustard
D. tikka disease - 4. sugarcane
Correct answer : 3
Q15. Which one of the following strongly threatens biodiversity?
Correct answer : 3
Q16. The International Centre for Genetic Engineering and Biotechnology established by the United Nations Organization (UNO) is located at
Correct answer : 4
Q17. A normal couple has five children, two of whom suffer from a somewhat uncommon genetic disorder that has, however, appeared occasionally in this familial line. What kind of gene is involved in this case?
Correct answer : 4
Q18. Consider the two statements given below, one labelled as Assertion (A) and the other labelled as Reason (R). [Assertion (A): Persons of blood group O are sometimes called universal donors - Reason (R): Because they can donate blood to persons of all types as they have no blood antibodies. In the context of the above two statements] Which one of the following is true?
Correct answer : 2
Q19. Successful fusion of somatic cells from man and mouse was first demonstrated by
Correct answer : 1
Q20. Genetic engineering is the most recent and potent technique developed to improve plants and animals. This means
Correct answer : 4
Q21. In genetic engineering, a DNA segment of interest is joined to a small but complete DNA molecule that is capable of replicating itself. This DNA molecule is referred to as
Correct answer : 4
Q22. Consider the two statements given below, one belled as Assertion (A) and the other labelled Reason (R). [Assertion (A): There are more colour blind men than women throughout the world - Reason (R): Colour blindness is a sex-linked disease resulting from a recessive gene on the Y chromosome.] In the context of the above statements, which one of the following is correct?
Correct answer : 2
Q23. A majority of black Americans and more than 20% whites cannot tolerate fresh milk because they
Correct answer : 2
Q24. The new techniques developed during the last few years have made it possible to produce an inter-generic hybrid between potato and tomato, the 'topato', through
Correct answer : 4
Q25. Body cells infected with virus produce a protein called
Correct answer : 4
Q26. Chocolates can be bad for health because of a high content of
Correct answer : 4
Q27. The naturally occurring anti-coagulant in the human blood is
Correct answer : 3
Q28. The best way to maintain a natural equilibrium between the pest and predator is by using
Correct answer : 4
Q29. Sting of a honeybee is modified
Correct answer : 4
Q30. While writing, one holds the pen by tips of the digits 1, 2 and 3 of the hand supported by the
Correct answer : 3
Q31. Find the odd one out
Correct answer : 3
Q32. Geriatrics is concerned with
Correct answer : 4
Q33. Infants up to the age of six months are immune to measles because of
Correct answer : 3
Q34. Over 200 cm rainfall per year occurs in
Correct answer : 1
Q35. One kind of hypersensitivity resulting due to interaction of humoral antibodies with mast cells and basophils is
Correct answer : 3
Q36. Hypermnesia is
Correct answer : 4
Q37. If the blood circulation in an afflicted portion of a limb of the body is curtailed so that the tissues in that area die, this condition is known as
Correct answer : 2
Q38. The first scientist to recognise that pus and suppuration were the chief factors in death following surgery was
Correct answer : 4
Q39. Many workers including doctors develop premature cataract while being exposed to
Correct answer : 4
Q40. Tobacco smoke is injurious to health because it contains
Correct answer : 4
Q41. Red blood corpuscles burst in [1. sugar syrup, 2. hypertonic sodium chloride solution, 3. tap water, 4. distilled water]
Correct answer : 3
Q42. In which of the following groups, animals bear no teeth?
Correct answer : 1
Q43. Biceps and other skeletal muscles are far better developed in males than in females because their diameter increases due to
Correct answer : 4
Q44. The two diseases that most often kill AIDS victims are [1. Kaposi's sarcoma, 2. Lymphangioma, 3. Pneumocystis carinii pneumonia, 4. Systemic lupus erythromatosus]
Q46. Match the items of List I with List II and select the correct answer by using the codes given below the lists
List I — List II A. Gill book — 1. King-crab B. Gill basket — 2. Dipnoi C. Lung book — 3. Fish and cyclostomes D. Lung-fish — 4. Spider and scorpion — 5. Crab
Correct answer : 4
Q47. Match the items of List I with List II and select the correct answer by using the codes given below the lists
List I — List II
A. Cercaria — 1. Nematode
B. Sporozoites — 2. Whipworm
C. Bladderworm — 3. Trematode
D. Threadworm — 4. Tapeworm
— 5. Plasmodium
Correct answer : 2
Q48. Match the items of List I with List II and select the correct answer by using the codes given below the lists
List I — List II
A. Riboflavin — 1. Vitamin K
B. Tocopherol — 2. Vitamin D
C. Retinol — 3. Vitamin A
D. Calciferol — 4. Vitamin E
— 5. Vitamin B2
Correct answer : 3
Q49. Match the items of List I with List II and select the correct answer by using the codes given below the lists
List I — List II
A. Cocaine — 1. Tranquilliser
B. Marijuana — 2. Stimulunt
C. Valium — 3. Narcotic
D. Morphine — 4. Hallucinogen
Correct answer : 2
Q50. Which of the following tissue components are involved in transport of organic substances in plants?