Biology Today — May 2017

(WallPaper) #1

  1. The hormone used in a suspension culture is
    (a) 2, 4-D (b) BAP
    (c) NAA (d) none of these.

  2. Match column I with column II and choose the correct
    option.
    Column I Column II
    (Types of joints) (Bones involved)
    A. Ball and socket 1. Carpal and metacarpal of
    thumb of hand
    B. Hinge 2. Atlas and axis
    C. Pivot 3. Frontal and parietal bone
    D. Saddle 4. Knee
    5. Humerus and pectoral
    girdle
    (a) A – 5, B – 4, C – 2, D – 1
    (b) A – 1, B – 3, C – 4, D – 5
    (c) A – 5, B – 4, C – 3, D – 1
    (d) A – 1, B – 2, C – 5, D – 4

  3. Which of the following is exhibited by C 4 plants?


A. Kranz anatomy
B. The product of photosynthesis is oxaloacetic acid
C. Both PEP carboxylase and Ribulose-bisphosphate
carboxylase act as carboxylating enzymes
(a) A and B only (b) B and C only
(c) A and C only (d) A, B and C


  1. Match the items of column I with column II and select the
    correct option.
    Column I Column II
    A. Electrostatic 1. Removes gases like SO 2
    precipitator
    B. Scrubber 2. Reduces automobile
    emission
    C. Catalytic converter 3. Removes particulate matter
    (a) A – 2, B – 3, C – 1 (b) A – 3, B – 2, C – 1
    (c) A – 1, B – 2, C – 3 (d) A – 3, B – 1, C – 2

  2. Match column I with column II and select the correct option
    from codes given below.
    Column I Column II
    A. Phosphoenol p. 6-carbon compound
    pyruvate (PEP)
    B. Ribulose q. 2-carbon compound
    biphosphate (RuBP)


C. Oxaloacetic acid r. 4-carbon compound
(OAA)
D. Acetyl co-enzyme-A s. 5-carbon compound
t. 3-carbon compound
(a) A-t, B-s, C-r, D-q (b) A-r, B-s, C-t, D-p
(c) A-t, B-p, C-q, D-r (d) A-q, B-r, C-s, D-t


  1. Excess proteins, carbohydrates and fats are stored in body as
    (a) fat (b) glycogen
    (c) starch (d) ATP.

  2. What is true about Bt toxin?
    (a) Bt protein exists as active toxin in the Bacillus.
    (b) The activated toxin enters the ovaries of the pest to
    sterilise it and thus prevent its multiplication.
    (c) The concerned Bacillus has antitoxins.
    (d) The inactive protoxin gets converted into active form in
    the insect gut.

  3. Ozone depletion in stratosphere would result in increased
    (a) forest fires (b) global warming
    (c) skin cancer incidences (d) none of these.

  4. Golden rice is a transgenic crop of the future with the
    following improved trait
    (a) insect resistance
    (b) high lysine (essential amino acid) content
    (c) high protein content
    (d) high vitamin A content.

  5. Cell wall consists of
    (a) lignin, hemicellulose, tubulin and lipid
    (b) hemicellulose, cellulose, tubulin and lignin
    (c) lignin, hemicellulose, tubulin and lipid
    (d) lignin, hemicellulose, pectin and cellulose.


ANSWER KEY



  1. (d) 2. (c) 3. (d) 4. (a) 5. (a)

  2. (a) 7. (d) 8. (d) 9. (b) 10. (a)

  3. (d) 12. (a) 13. (d) 14. (b) 15. (c)

  4. (c) 17. (d) 18. (a) 19. (b) 20. (c)

  5. (a) 22. (c) 23. (b) 24. (c) 25. (b)

  6. (c) 27. (a) 28. (c) 29. (b) 30. (b)

  7. (d) 32. (a) 33. (b) 34. (c) 35. (d)

  8. (b) 37. (c) 38. (a) 39. (a) 40. (b)

  9. (b) 42. (d) 43. (a) 44. (c) 45. (b)

  10. (c) 47. (c) 48. (c) 49. (c) 50. (d)

  11. (c) 52. (a) 53. (b) 54. (a) 55. (b)

  12. (c) 57. (c) 58. (c) 59. (c) 60. (a)

  13. (b) 62. (a) 63. (c) 64. (d) 65. (d)

  14. (b) 67. (b) 68. (c) 69. (a) 70. (d)

  15. (d) 72. (a) 73. (a) 74. (a) 75. (b)

  16. (d) 77. (b) 78. (c) 79. (b) 80. (a)

  17. (a) 82. (a) 83. (d) 84. (d) 85. (a)

  18. (b) 87. (d) 88. (c) 89. (d) 90. (d)
    

  19. Peroxisomes Pg. 34

  20. Nuclear matrix Pg. 39

  21. Typhoid Pg. 63

  22. Toxoid vaccine Pg. 72


ANSWERS WHO AM I ...

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