In the given food chain, suppose the amoun

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Solution

Q.
In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level

$G r a s s \to G r a s s h o p p e r \to F r o g \to S n a k e \to H a w k$

1 5 kJ

2 50 kJ

3 500 kJ

4 5000 kJ

Ans.
(4)

According to the 10 per cent law, only 10% of the energy available in a trophic level is passed on to the next trophic level. As a result, if the energy available at the fourth trophic level is 5 kJ, then the energy available at the producer level is 5000 kJ:
$5 \to 50 \to 500 \to 5000 .$

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