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Question

Energy flow through different trophic levels in any food chain or food web is unidirectional.

A
True
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B
False
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Solution

The correct option is A True
Solar energy is captured by autotrophs i.e. green plants. They are then eaten by herbivores and herbivores in turn by carnivores. The energy flows from autotrophs to carnivores. Energy never reverts to the lower trophic levels. Thus, the energy flow is unidirectional.

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