Kelvi

Kelvi

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Did you know?

Water is the only substance found naturally in all three states on Earth's surface.

Kelvi

Earn up to ₹2000

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27days until NEET 2026Every question counts. ✊

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Did you know?

Hydrogen is the most abundant element in the universe, making up ~75% of all matter.

Kelvi

Kelvi

Earn up to ₹2000

0 pts

Biology questions for 2015

Click on a question to view the full question and options.

1. Which one gives the most valid and recent explanation for stomatal movements?

2. Which of the following had the smallest brain capacity?

3. High value of BOD (biochemical oxygen demand) indicates that

4. Sliding filament theory can be best explained as

5. A gymnast is able to balance his body upside down even in total darkness because of

6. A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offspring?

7. Typical growth curve in plants is

8. The UN Conference of Parties on climate change in the year 2011 was held in

9. A technique of micropropagation is

10. How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

11. The below reaction is the floral formula of

12. The crops engineered for glyphosate are resistant/tolerant to

13. Which of the following statements is not correct?

14. In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are

15. In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to

16. Cytochromes are found in

Read the following five statements (a–e) and select the option with all correct statements: $\newline$ (a) Mosses and lichens are the first organisms to colonize a bare rock. $\newline$ (b) Selaginella is a homosporous pteridophyte. $\newline$ (c) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. $\newline$ (d) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

18. Which one of the following is correct?

19. The movement of a gene from one linkage group to another is called

20. Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services?

21. Rachel Carson’s famous book ‘Silent Spring’ is related to

22. Gastric juice of infants contains

23. Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

24. Capacitation refers to change in the

25. Most animals are tree dwellers in a

26. True nucleus is absent in

27. Glenoid cavity articulates

28. Transmission tissue is the characteristic feature of

29. DNA is not present in

30. Gene regulation governing lactose operon of E. coli that involves the lac I gene product is

31. Which of the following does not favour the formation of large quantities of dilute urine?

32. What causes a green plant exposed to the light on only one side, to bend towards the source of light as it grows?

33. Nuclear envelope is a derivative of

34. Select the correct option by matching Column I with Column II.

35. Keel is the characteristic feature of the flower

36. Perigynous flowers are found in

37. A chemical signal that has both endocrine and neural roles is

38. In which of the following both pairs have correct combination?

39. HIV that causes AIDS, first starts destroying

40. Hysterectomy is surgical removal of

41. Removal of proximal convoluted tubule from the nephron will result in

42. A major characteristic of the monocot root is the presence of

43. Which of the following characteristics is mainly responsible for the diversification of insects on land?

44. Which of the following cells during gametogenesis is normally diploid?

45. The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are

46. The chromosomes in which centromere is situated close to one end are

47. In a ring girdled plant

48. Vertical distribution of different species occupying different levels in a biotic community is known as

49. Multiple alleles are present

50. The mass of living material at a trophic level at a particular time is called

51. Which of the following animals is not viviparous?

52. In an ecosystem, the rate of production of organic matter during photosynthesis is termed as

53. Erythropoiesis starts in

54. Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism?

55. Blood pressure in the mammalian aorta is maximum during

56. When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?

57. Vascular bundles in monocotyledons are considered closed because

58. Male gametes are flagellated in

59. Which one of the following may require pollinators, but is genetically similar to autogamy?

60. In ginger, vegetative propagation occurs through

61. Which one of the following is not an inclusion body found in prokaryotes?

62. A somatic cell that has just completed the S phase of its cell cycle, as compared to a gamete of the same species, has

63. Alleles are

64. Select the correct matching in the following pairs:

65. The terga, sterna and pleura of cockroach body are joined by

66. Which of the following represents the correct combination without any exception?

67. Which one of the following statements is incorrect?

68. Which of the following regions of the brain is incorrectly paired with its function?

69. Which one of the following statements is not true?

70. The active form of Entamoeba histolytica feeds upon

71. Which of the following viruses is not transferred through semen of an infected male?

72. A population will not exist in Hardy–Weinberg equilibrium if

73. The guts of cow and buffalo possess

74. The hilum is a scar on the

75. Secondary succession takes place on/in

76. Which one of the following statements is wrong?

77. The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that

78. Match each disease with its correct type of vaccine.

79. Which of the following are the important floral rewards to the animal pollinators?

80. An abnormal human baby with ‘XXX’ sex chromosomes was born due to

81. Transpiration and root pressure cause water to rise in plants by

82. Which of the following endoparasites of humans does show viviparity?

83. Cryopreservation of gametes of threatened species in viable fertile condition can be referred to as

84. Which one of the following matches is correct?

85. Minerals known to be required in large amounts for plant growth include

86. Which of the following enhances or induces fusion of protoplasts?

87. Which of these is not an important component of initiation of parturition in humans?

88. Which of the following gametophytes is not independent and free-living?

89. Which of the following is not a sexually transmitted disease?

90. Leaves become modified into spines in