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Which of the following statements is incorrect?

(1) Energy content gradually decreases from first to fourth trophic level

(2) Biomass decreases from first to fourth trophic level

(3) Energy content gradually increases from first to fourth trophic level

(4) Number of individuals decreases from first trophic level to fourth trophic level
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Ecosystem, Energy flow

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Ans: (3) Energy content gradually increases from first to fourth trophic level

Sol. Energy content does not remain trapped permanently in any organism. It is passed on to various trophic levels in food chain.

Hence, energy content gradually decreases from first (T1) to fourth (T4) trophic level by following ten percent law proposed by Lindemann.

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