FSC Biology MCQs

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[question]
Process that supplies food to living things through decaying and decomposition is called
A. Food cycle B. Nutrient cycle
C. Dead-live cycle D. None of these
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[explanation]b[/explanation]
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[question]
Balance in the nutrient cycle can be upset when
A. Too much food is consumed B. Not enough food is produced
C. Decayed nutrients are not returned to the ground D. All of these
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[explanation]d[/explanation]
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[question]
Which statement is true?
A. 20% of total water is in the form of frozen ice caps B. 80% is in oceans
C. 1% as fresh water lakes, streams and rivers D. 10% is in canals
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[explanation]c[/explanation]
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[question]
Replantation of plants in the areas where they were present earlier is called
A. Deforestation B. Aforestation
C. Forestation D. Reforestation
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[explanation]d[/explanation]
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[question]
About half of the rain which falls in tropical forests comes from
A. High winds B. Cold surroundings
C. Transpiration of plants D. Surrounding seas
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[explanation]c[/explanation]
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[question]
Ozone depletion is commonly caused by
A. CFCs B. Industrial smoke
C. Heavy nitrogen gasses D. Carbon dioxide
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[explanation]A[/explanation]
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[question]
Sun rays are reradiated from the earth’s surface in the form of
A. Long wave radiations B. Short wave radiations
C. Radiowaves D. Medium waves
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[explanation]A[/explanation]
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[question]
Pesticides and fertilizers are also called
A. Pestochemicals B. Industrochemicals
C. Killing chemicals D. Agrochemicals
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[explanation]d[/explanation]
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[question]
Which disease does not match its etiology?
A. Kwashiorkor is a nutritional deficiency B. Alzheimer is a mental illness
C. Cretinism is due to hormonal imbalance D. Cholera is physical disorder
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[explanation]d[/explanation]
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[question]
Diphtheria is
A. Genetic disease B. Pathogenic disease
C. Metabolic disease D. Nutritional disease
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[explanation]b[/explanation]
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