Class 12

Environmental Issues question bank (Biology)

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Q1.

Pesticides with very low biodegradation but strong affinity for fatty tissues are:

(A)
Triazines
(B)
Pyrethroids
(C)
Organochlorines
(D)
Organophosphates
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Q2.

Biological magnification refers to

(A)
Concentration of insecticide in animals
(B)
Concentration of organophosphate in plants
(C)
Photography in laboratory
(D)
Increase in number of animals and plants in ecosystem
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