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Free download PDF of General knowledge(gk) multiple choice questions(mcqs) and answers on Biology. These general awareness quiz objective questions answers include mcqs on sources of methane, modified stem etc.
101
Which one of the following is a modified stem?
A
Coconut
B
Carrot
C
Potato
D
Sweet potato
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102
Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the
A
oil has long shelf-life
B
seeds have very high oil content
C
oil has very low erucic acid content
D
oil is rich in unsaturated fatty acids
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103
Haemophilia is a genetic disorder which leads to
A
decrease in WBC
B
rheumatic heart disease
C
non-clotting of blood
D
decrease in haemoglobin level
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104
Consider the following statements:
I. Dengue is a protozoan disease transmitted by mosquitoes.
II. Retro-orbital pain is not a symptom of dengue.
III. Skin rash and bleeding from nose and gums are some of the symptoms of dengue.
Which of the statements given above are correct?
A
I and II
B
III only
C
I and III
D
I, II and III
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105
Which one among the following is not a good source of nutritional calcium?
A
Ragi
B
Rice
C
Egg
D
Skimmed milk
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106
In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
I. decomposer microorganisms to the surface.
II. nutrients to the surface.
III. bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct?
A
I only
B
II only
C
II and III
D
III only
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107
What is the pH level of blood of a natural person?
A
4.5 - 4.6
B
6.45 - 6.55
C
7.35 - 7.45
D
8.25 - 8.35
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108
Consider the following statements:
I. Biodiversity hotspots are located only in tropical regions.
II. India has four biodiversity hotspots i.e., Eastern Himalayas, Western Himalayas, western Ghats and Andaman and Nicobar Islands.
Which of the statements given above is/are correct?
A
I only
B
II only
C
Both I and II
D
Neither I nor II
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109
Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/reasons is this attributable?
I. The anaerobic conditions associated with rice cultivation cause the emission of methane.
II. When nitrogen based fertilizers are used, nitrous oxide is emitted from the cultivated soil.
Which of the statements given above is/are correct?
A
I only
B
II only
C
Both I and II
D
Neither I nor II
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110
Consider the following
I. Rice fields
II. Coal mining
III. Domestic animals
IV. Wet lands
Which of the above sources of methane, a major greenhouse gas?
A
I and II only
B
II and III only
C
I, II and III only
D
I, II, III and IV
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