A: A few toxic substances often present in in | vedclass

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(C) Biological magnification (biomagnification) refers to the increase in concentration of toxic substances at successive trophic levels. This phenome

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Assertion is correct,but Reason is incorrect.

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(C) Biological magnification (biomagnification) refers to the increase in concentration of toxic substances at successive trophic levels. This phenomenon occurs because the toxic substance cannot be metabolised or excreted by an organism and thus gets accumulated in the body. Since the Reason states that toxic substances can be easily metabolised or excreted,it contradicts the definition of biomagnification. Therefore,the Assertion is correct,but the Reason is incorrect.

$A$: $A$ few toxic substances often present in industrial waste waters undergo biological magnification.
$R$: $A$ toxic substance can easily be metabolised or excreted by an organism.

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$A$: $A$ few toxic substances often present in industrial waste waters undergo biological magnification.$R$: $A$ toxic substance can easily be metabolised or excreted by an organism.