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प्रश्न
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
विकल्प
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
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उत्तर
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
Explanation:
The energy flow is unidirectional. The energy that autotrophs absorb from the Sun does not return, and the energy that goes to herbivores does not go back to the autotrophs. It is no longer accessible to the previous level as it progresses through the various trophic levels.
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संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
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Give two differences between food chain and food web.
What would happen to the number of grass plants and foxes if the number of rabbits increased?
Why are there rarely more than five links (or five organisms) in a food chain?
Explain why, a food chain usually cannot have more than three or four steps.
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
The food chain begins with the energy given by the ______.
Which group of organisms are not constituents of a food chain?
- Grass, lion, rabbit, wolf
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