Home Biology Ecosystem Energy Flow and Food Chain The amount of energy reaching an upper troph…
Biology Ecosystem Energy Flow and Food Chain Single Correct MCQ
Published on: August 13, 2026

The amount of energy reaching an upper trophic level is determined by

A
net primary production.
B
net primary production and the efficiencies with which food energy is converted to biomass.
C
gross primary production.
D
gross primary production and the efficiencies with which food energy is converted to biomass.

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Text Solution

Verified by Experts
The correct answer is:
B

Energy reaching an upper trophic level depends on:

Net Primary Production (NPP): the energy stored by plants after using some for respiration. This is the energy available to herbivores.

Efficiency of energy transfer: only a part of consumed energy is converted into biomass and passed to the next trophic level.

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