Question

energy flow in food chains is always unidirectional. justify this statement

Answer 1

Thus, the flow of energy in the ecosystem is said to be unidirectionalbecause the energy lost as heat from the living organisms of a food chain cannot be reused by plants in photosynthesis. During the transfer ofenergy through successive trophic levels in an ecosystem, there is a loss of energy all along the path.
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Answer 2

The energy that is captured by the autotrophs does not revert back to the Sun. Therefore, in the food chain, the energy moves progressively through various trophic levels. This energy is no longer available to the previous trophic level. Thus, the flow of energy in a food chain is unidirectional.

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