Q81.
With reference to food chains in ecosystems, consider the following statements: 1. A food chain illustrates the order in which a chain of organisms feed upon each other. 2. Food chains are found within the populations of a species. 3. A food chain illustrates the numbers of each organism which are eaten by others. Which of the statements given above is/are correct?
Answer
A
Explanation
A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. Statement 1 is correct. Statement 2 is wrong — food chains involve multiple different species, not within the same population. Statement 3 is wrong — a food chain shows feeding relationships, not numbers (that would be a pyramid of numbers).