Food chains in ecosystems
Question
With reference to food chains in ecosystems, consider the following statements:
Which of the statements given above is/are correct?
- 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.
Options
1 only
1 and 2 only
1, 2 and 3
None
Explanation
Statement 1 is correct - a food chain does illustrate the feeding sequence of organisms in an ecosystem. Statement 2 is incorrect - food chains operate between different species, not within populations of a single species. Statement 3 is incorrect - food chains show the order of feeding relationships, not necessarily the numerical relationships of organisms eaten. A food chain demonstrates the linear transfer of energy from producers through consumers. > Only the first statement accurately describes a food chain - it shows which organisms eat which others in a sequential manner.
Question details
Year
2014
Paper
GS Paper 1
Question
Q31
Subject
Environment
Sub-topic
Ecology and Food Chains
Type
Statement-based
Difficulty
Easy
Nature
Static
Source hint
NCERT Biology - Ecosystems
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