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- Answered
- Review
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Question 1 of 89
1. Question
Gause’s principle of competitive exclusion states that:
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Question 2 of 89
2. Question
The two polypeptides of human insulin are linked together by: –
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Question 3 of 89
3. Question
The coconut water from tender coconut represents: –
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Question 4 of 89
4. Question
Which of the following statements is wrong for viriods?
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Question 5 of 89
5. Question
Which of the following features is not present in the Phylum – Arthropoda?
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Question 6 of 89
6. Question
Which of the following most appropriately describes haemophilia?
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Question 7 of 89
7. Question
Emerson’s enhancement effect and Red drop have been instrumental in the discovery of: –
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Question 8 of 89
8. Question
Name the chronic respiratory disorder caused mainly by cigarette smoking: –
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Question 9 of 89
9. Question
A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called: –
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Question 10 of 89
10. Question
Mitochondria and chloroplast are: –
- semi-autonomous organelles
- formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following options is correct?
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Question 11 of 89
11. Question
In context of Amniocentesis, which of the following statement is incorrect?
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Question 12 of 89
12. Question
In a chloroplast the highest number of protons are found in: –
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Question 13 of 89
13. Question
Photosensitive compound in human eye is made up of: –
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Question 14 of 89
14. Question
Spindle fibres attach on to: –
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Question 15 of 89
15. Question
Which is the National Aquatic Animal of India?
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Question 16 of 89
16. Question
Which of the following is required as inducer(s) for the expression of Lac operon?
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Question 17 of 89
17. Question
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
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Question 18 of 89
18. Question
Microtubules are the constituents of :-
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Question 19 of 89
19. Question
A complex of ribosomes attached to a single strand of RNA is known as: –
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Question 20 of 89
20. Question
Fertilization in humans is practically feasible only if: –
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Question 21 of 89
21. Question
Asthma may be attributed to:
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Question 22 of 89
22. Question
The Avena curvature is used for bioassay of:
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Question 23 of 89
23. Question
The standard petal of a papilionaceous corolla is also called:
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Question 24 of 89
24. Question
Tricarpellary syncarpous gynoecium is found in flowers of:
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Question 25 of 89
25. Question
One of the major components of cell wall of most fungi is: –
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Question 26 of 89
26. Question
Select the incorrect statement:
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Question 27 of 89
27. Question
In meiosis crossing over is initiated at:
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Question 28 of 89
28. Question
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio of:
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Question 29 of 89
29. Question
Which of the following is the most important cause of animals and plants being driven to extinction?
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Question 30 of 89
30. Question
Which of the following is a characteristic feature of cropland ecosystem?
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Question 31 of 89
31. Question
Changes in GnRH pulse frequency in females is controlled by circulating levels of :-
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Question 32 of 89
32. Question
Which of the following is not a feature of the plasmids?
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Question 33 of 89
33. Question
Which of the following features is not present in Periplaneta americana ?
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Question 34 of 89
34. Question
In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks selfcells, then it leads to :-
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Question 35 of 89
35. Question
Match the terms in Column-I with their description in Column-II and choose the correct option :
Column I Column II (a) Dominance (i) Many genes govern a single character (b) Codominance (ii) In a heterozygous organism only one allele expresses itself (c) Pleiotropy (iii) In a heterozygous organism both alleles express themselves fully (d) Polygenic Inheritance (iv) A single gene influences many characters -
Question 36 of 89
36. Question
Joint Forest Management Concept was introduced in India during:
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Question 37 of 89
37. Question
Pick out the correct statements:
- Haemophilia is a sex-linked recessive disease
- Down’s syndrome is due to aneuploidy
- Phenylketonuria is an autosomal recessive gene disorder.
- Sickle cell anaemia is a X-linked recessive gene disorder
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Question 38 of 89
38. Question
Which one of the following statements is wrong?
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Question 39 of 89
39. Question
Proximal end of the filament of stamen is attached to the
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Question 40 of 89
40. Question
Which of the following approaches does not give the defined action of contraceptive ?
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Question 41 of 89
41. Question
The taq polymerase enzyme is obtained from:
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Question 42 of 89
42. Question
Identify the correct statement on ‘inhibin’: –
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Question 43 of 89
43. Question
Which part of the tobacco plant is infected by Meloidogyne incognita?
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Question 44 of 89
44. Question
Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain: –
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Question 45 of 89
45. Question
Which one of the following cell organelles is enclosed by a single membrane?
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Question 46 of 89
46. Question
Lack of relaxation between successive stimuli in sustained muscle contraction is known as: –
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Question 47 of 89
47. Question
Which of the following is not a stem modification?
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Question 48 of 89
48. Question
Water soluble pigments found in plant cell vacuoles are: –
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Question 49 of 89
49. Question
Select the correct statement :-
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Question 50 of 89
50. Question
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
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Question 51 of 89
51. Question
Which type of tissue correctly matches with its location?
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Question 52 of 89
52. Question
A plant in your garden avoids photo-respiratory losses, has improved water use efficiency shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?
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Question 53 of 89
53. Question
Which of the following structures is homologus to the wing of a bird?
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Question 54 of 89
54. Question
Which of the following characteristic features always holds true for the corresponding group of animals?
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Question 55 of 89
55. Question
Which of the following statements is not true for cancer cells in relation to mutations?
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Question 56 of 89
56. Question
The amino acid Tryptophan is the precursor for the synthesis of: –
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Question 57 of 89
57. Question
Following are the two statements regarding the origin of life: –
- The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
- The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct?
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Question 58 of 89
58. Question
Reduction in pH of blood will: –
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Question 59 of 89
59. Question
Analogous structures are a result of :-
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Question 60 of 89
60. Question
Which of the following is a restriction endonuclease?
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Question 61 of 89
61. Question
The term ecosystem was coined by: –
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Question 62 of 89
62. Question
Which one of the following statements is wrong?
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Question 63 of 89
63. Question
In bryophytes and pteridophytes, transport of male gametes requires: –
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Question 64 of 89
64. Question
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1–N/K) :-
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Question 65 of 89
65. Question
Which one of the following statements is not true?
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Question 66 of 89
66. Question
Which of the following would appear as the pioneer organisms on bare rocks?
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Question 67 of 89
67. Question
Which one of the following is the starter codon?
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Question 68 of 89
68. Question
Which one of the following characteristics is not shared by birds and mammals?
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Question 69 of 89
69. Question
Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?
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Question 70 of 89
70. Question
Blood pressure in the pulmonary artery is: –
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Question 71 of 89
71. Question
Cotyledon of maize grain is called: –
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Question 72 of 89
72. Question
In the stomach, gastric acid is secreted by the: –
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Question 73 of 89
73. Question
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers: –
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Question 74 of 89
74. Question
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom: –
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Question 75 of 89
75. Question
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options: –
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Question 76 of 89
76. Question
In mammals, which blood vessel would normally carry largest amount of urea?
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Question 77 of 89
77. Question
Seed formation without fertilization in flowering plants involves the process of: –
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Question 78 of 89
78. Question
Which of the following is wrongly matched in the given table? (Microbe – Product – Application)
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Question 79 of 89
79. Question
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates :-
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Question 80 of 89
80. Question
It is much easier for a small animal to run uphill than for a large animal, because :-
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Question 81 of 89
81. Question
Which of the following is not a characteristic feature during mitosis in somatic cells ?
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Question 82 of 89
82. Question
Which of the following statements is not correct?
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Question 83 of 89
83. Question
Specialised epidermal cells surrounding the guard cells are called: –
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Question 84 of 89
84. Question
Which of the following guards the opening of hepatopancreatic duct into the duodenum?
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Question 85 of 89
85. Question
Stems modified into flat green organs performing the functions of leaves are known as: –
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Question 86 of 89
86. Question
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the :-
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Question 87 of 89
87. Question
A river with an inflow of domestic sewage rich in organic waste may result in :-
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Question 88 of 89
88. Question
A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in :-
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Question 89 of 89
89. Question
A typical fat molecule is made up of :-