Question

In the following food chain what will be the amount of energy of 2nd trophic level (deer) if the energy avialable at the first trophic level is 10,000J?

Answer 1

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Given - 10000 J of energy is avalable to producers (plants)

We know that the plants are able to synthesize only 1% of total energy available to them.

So, energy produced by producers = 1/100 * 10000 = 100 J

Accroding to 10 % law, only 10% of total energy entering a trophic level is available to next, higher torphic level. 

So, energy transferred to secondary consumer = 10/100 * 100 = 10 J

Similarly, only 10% of energy entering the secondary consumers is available to tertiary consumer.

So, energy transferred to tertiary consumer = 10/100 * 10 = 1 J




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