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Question

What amount of energy is available to the lion in the following food chain, if plants have 10000J of energy available from the sun?
Plants $$\rightarrow$$ Deer $$\rightarrow$$ Lion


A
1000J
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B
100J
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C
10J
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D
1J
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Solution

The correct option is C 100J
  • Plants can trap only 1% of the Sun's energy. 
  • While transferring energy to the next level, only 10% of the actual amount is transferred.
  • So, plants have 10000J of energy available in them as food. 
  • Now, according to the 10 percent law, 10% of 10000 is 1000J of energy, which will be available for deer as flesh food. Then, the food energy available to the lion will be 10% of 1000J which is 100J.

So, the correct option is B.

Biology

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