Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 3 PCB MCQ (Single Correct)

Biomagnification refers to increase in concentration of the toxicant at successive trophic levels, this happens because:

A
A toxic substance accumulated by an organism can not be metabolised
B
A toxic substance accumulated by an organism can not be excreted
C
A toxic substance is passed on to the next higher trophic level
D
All of the above

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The correct answer is:
D

Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level. This phenomenon is well known for mercury and DDT.

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