- The solid linear cytoskeletal elements having a diameter of
6 nm and made up of a single type of monomer are known
as
(a) microtubules (b) microfilaments
(c) intermediate filaments (d) lamins. - In most simple type of canal system of porifera, water flows
through which one of the following ways?
(a) Ostia → Spongocoel → Osculum → Exterior
(b) Spongocoel → Ostia → Osculum → Exterior
(c) Osculum → Spongocoel → Ostia → Exterior
(d) Osculum → Ostia → Spongocoel → Exterior. - In the gastrointestinal tract the Meissner’s plexus and the
Auerbach’s plexus occur respectively in the
(a) lamina propria and muscularis mucosa
(b) submucosa and muscularis externa
(c) submucosa and mucosa
(d) mucosa and muscularis externa. - Select the wrong statement.
(a) The term ‘contagium vivum fluidum’ was coined by M.
W. Beijerinck.
(b) Mosaic disease in tobacco and AIDS in human being
are caused by viruses.
(c) The viroids were discovered by D.J. Ivanowsky.
(d) W.M. Stanley showed that viruses could be
crystallised.
ANSWER KEY
- (d) 2. (a) 3. (c) 4. (c) 5. (b)
- (c) 7. (c) 8. (b) 9. (d) 10. (a)
- (a) 12. (c) 13. (c) 14. (a) 15. (d)
- (b) 17. (a) 18. (c) 19. (a) 20. (c)
- (c) 22. (a) 23. (c) 24. (c) 25. (c)
- (c) 27. (b) 28. (c) 29. (b) 30. (a)
- (a) 32. (a) 33. (d) 34. (c) 35. (b)
- (d) 37. (a) 38. (b) 39. (a) 40. (c)
- (c) 42. (b) 43. (a) 44. (d) 45. (a)
- (c) 47. (a) 48. (b) 49. (b) 50. (a)
- (d) 52. (c) 53. (d) 54. (a) 55. (d)
- (a) 57. (b) 58. (a) 59. (d) 60. (b)
- (d) 62. (a) 63. (b) 64. (d) 65. (c)
- (b) 67. (c) 68. (d) 69. (c) 70. (a)
- (d) 72. (d) 73. (a) 74. (a) 75. (b)
- (c) 77. (a) 78. (a) 79. (a) 80. (a)
- (c) 82. (c) 83. (d) 84. (c) 85. (a)
- (a) 87. (c) 88. (a) 89. (a) 90. (b)
- (a) 92. (c) 93. (b) 94. (b) 95. (b)
- (c) 97. (b) 98. (a) 99. (b) 100. (c)
Unscramble the letters using the given clues.U N s C R A m b L E m E
Scrambled letters Clues Words- FSMAOIROTCBINI Deals with storage and analysis of DNA and protein .............................
data with the help of computers. - EOVRSRTIUR Replicate through the process of reverse transcription. .............................
- OPETRMOR Binding site of DNA for RNA polymerase. .............................
- MUNFDBIULUNI It collects ovum after it is released from the ovary. .............................
- YMOAAUTG Pollination of a flower by its own pollen. .............................
- AIGANN Acute pain chest in due to lack of oxygen in heart muscles. .............................
- DRCSOOPYHIN Growing of plants in a mineral nutrient solution in complete
absence of soil. ............................. - RHCNEDA Arrangement in a vascular bundle where protoxylem lies .............................
towards the pith and metaxylem lies towards periphery. - SPNOI A photosensitive protein present in human eyes. .............................
- DRTEILN Modification of stem developed from axillary buds. .............................
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