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Question

If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to the tertiary consumer?​ ​

A
10 J
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B
0.15 J
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C
1.5 J
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D
15 J
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Solution

The correct option is B 0.15 J
  • A typical food chain is -​

Producers → primary consumers → secondary consumers → tertiary consumers​

  • According to the ten percent law, only 10% of the energy is available to the organism in the succeeding trophic level.​

  • Being the last trophic level, the tertiary consumers will receive 0.15 J energy if 150 J energy is available to the producers as the amount of energy will reduce by 10% in each trophic level.


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