1.

What is biological magnification? Explain giving one example.

Answer»

The accumulation of chemicals in the top most organism of the trophic level or food chain is called biological magnification. 

Example: Farmer sprays pesticides on the crops which enters the food chain, from crops these pesticides enter into the organisms that feed on it. 

grass ⎯⎯→ grasshopper ⎯⎯→ frog ⎯⎯→ snake ⎯⎯→ hawk 

In this food chain the maximum amount of pesticide will be found in the top most organism i.e., in hawk the chemical keeps accumulating.



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