Question

A food chain in an ecosystem represents the

• A. feeding relationship
• B. stratification
• C. ecological succession
• D. energy flow

Answer 1

Answer: (A), (D)

The correct options are
A feeding relationship
D energy flow

Transfer of food energy from the producers through a series of organisms with repeated eating and being eaten is known as food chain. The food chain consists of producers, primary consumers, secondary consumers, tertiary consumers or top carnivores and decomposers. Energy trapped by the producers are transferred to other organisms in the food chain. Therefore, a food chain in an ecosystem represents both feeding relationship and energy flow in an ecosystem. Ecological succession on the other hand, is the gradual process by which ecosystems change and develop over time. Also, Stratification only tells about the spatial organisation of species in a biological community. It doesn't have a role to play in the food chain.