Question

Unidirectional flow of energy defines that whenever energy flow from the lower trophic level to upper trophic level it doesn't go back to same trophic level again. Thus knon as unidirectional flow of energy.

Answer 1

yes it is right

what is your question

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Answer 2

A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels.