Home Biology Ecosystem Ecological Succession (NIS) Which of the following is NOT a hypothesis f…
Biology Ecosystem Ecological Succession (NIS) Single Correct MCQ
Published on: August 14, 2026

Which of the following is NOT a hypothesis for why food-chain length is limited?

A
Food-chain length is limited by one organism's ability to consume another.
B
Food-chain length is limited because they are easily disrupted by environmental perturbations.
C
Food-chain length is limited by productivity.
D
Food-chain length is a function of an ecosystem's physical structure

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Verified by Experts
The correct answer is:
A

There are three widely accepted hypotheses for why food-chain length is limited:

Productivity hypothesis → Higher productivity supports longer chains.

Dynamic stability hypothesis → Food chains are easily disrupted by environmental perturbations, so longer chains are less stable. Ecosystem size/physical structure hypothesis → Larger, more complex ecosystems can support longer chains.

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