ICSE Class 9 Answered

Significance of food chain:

(1) In all types of food chains, one organism becomes the food of the other organism. As a result, a situation of eating and being eaten exists. This maintains a check on the population and a balance in the ecosystem.

(2) Energy in the form of food is continuously transferred between different food chains. This helps to maintain the equilibrium in an ecosystem.

(3) Food chains help us to understand the interaction and the interdependence of different organisms in an area.