Environment & Ecology2013
With reference to food chains in ecosystems, consider the following statements:
- A food chain illustrates the order in which a chain of
- Food chains are found within the populations of a
- A food chain illustrates the numbers of each organism
which are eaten by others. Which of the statements given above is/are correct?
Explanation
The correct option is 1 only because a food chain specifically illustrates the linear sequence of organisms wherein each organism serves as food for the next, depicting the flow of energy and nutrients through trophic levels. Statement 2 is incorrect as food chains encompass interactions among species rather than populations of a single species, while statement 3 misrepresents food chains as it does not quantify the number of organisms consumed, focusing instead on the predatory relationships. Thus, food chains are fundamentally about the feeding relationships and energy transfer among different species in an ecosystem.