Ncert Exercises & Solutions

Q.34 What do you understand by biomagnification?

Ans. Biomagnification refers to the increase in the concentration of the toxic substances at successive trophic levels Is in the food chain.

This happens because a toxic substance accumulated by an organism can be metabolized or excreted and when this organism is eaten up by another animal trophic level, it is passed on to this and then to the next higher trophic level and so on.