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Q1. The theory of 'jumping genes' was propounded by
Q2. The following scientists won Nobel Prizes for their contributions to science. Who among them won it twice?
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?
Q4. Tomato, brinjal, potato, tobacco, petunia, and night jasmine belong to
Q5. Opium is a plant product obtained from
Q6. A tissue primarily concerned with the formation of new cells is called
Q7. Sucrose content in sugarcane decreases
Q8. Fertile soil, suitable for growing common crops, is likely to have a pH value of
Q9. The pairing of homologous chromosomes during prophase I of meiosis is called
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
Q11. If a mouse over eight times its normal size has been produced by introducing human growth hormone gene, the technique involved is called
Q12. Which one of the following approaches comes under the category of biotechnology?
Q13. Haemophilia is a hereditary disease carried by
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
Q15. Which one of the following strongly threatens biodiversity?
Q16. The International Centre for Genetic Engineering and Biotechnology established by the United Nations Organization (UNO) is located at
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?
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?
Q19. Successful fusion of somatic cells from man and mouse was first demonstrated by
Q20. Genetic engineering is the most recent and potent technique developed to improve plants and animals. This means
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
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?
Q23. A majority of black Americans and more than 20% whites cannot tolerate fresh milk because they
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
Q25. Body cells infected with virus produce a protein called
Q26. Chocolates can be bad for health because of a high content of
Q27. The naturally occurring anti-coagulant in the human blood is
Q28. The best way to maintain a natural equilibrium between the pest and predator is by using
Q29. Sting of a honeybee is modified
Q30. While writing, one holds the pen by tips of the digits 1, 2 and 3 of the hand supported by the
Q31. Find the odd one out
Q32. Geriatrics is concerned with
Q33. Infants up to the age of six months are immune to measles because of
Q34. Over 200 cm rainfall per year occurs in
Q35. One kind of hypersensitivity resulting due to interaction of humoral antibodies with mast cells and basophils is
Q36. Hypermnesia is
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
Q38. The first scientist to recognise that pus and suppuration were the chief factors in death following surgery was
Q39. Many workers including doctors develop premature cataract while being exposed to
Q40. Tobacco smoke is injurious to health because it contains
Q41. Red blood corpuscles burst in [1. sugar syrup, 2. hypertonic sodium chloride solution, 3. tap water, 4. distilled water]
Q42. In which of the following groups, animals bear no teeth?
Q43. Biceps and other skeletal muscles are far better developed in males than in females because their diameter increases due to
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]
Q45. Menstrual cycle occurs in [1. Loris, 2. Elephant, 3. Horse, 4. Chimpanzee]
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
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
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
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
Q50. Which of the following tissue components are involved in transport of organic substances in plants?