A food chain in a polluted aquatic ecosystem is given. Observe it and answer the following question. Fresh water rarr Algae rarr Fishes rarr Birds. (i) Which organis ms are disturbed more due to biomagnitication ? Why ? (ii) This ecosystem will be destroyed gra dually due to biomagnification. Why?

A food chain in a polluted aquatic ecosystem is given. Observe it and

1.	A food chain in a polluted aquatic ecosystem is given. Observe it and answer the following question. Fresh water rarr Algae rarr Fishes rarr Birds. (i) Which organis ms are disturbed more due to biomagnitication ? Why ? (ii) This ecosystem will be destroyed gra dually due to biomagnification. Why?
Answer» SOLUTION :Birds are disturbed more duc to biomagnification. As the birds occupy the TOP most level in the given food chain, the MAXIMUM concentration of harmful chemicals causing biomagnification get accumlated in their body. Biomagnification is the process of accumulation of nondegradable chemicals in the various trophic LEVELS of food chains. As the chemicals are non-degradable or cannot be washed. they cannot be removed from the organisms of the food chain. This leads to gradual destruction of the ECOSYSTEM.