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NDA 2016 GAT · General Knowledge · Ecology and Environment · medium

Decomposers form the first trophic level in a food chain. 2. All the energy at one trophic level is passed on to the next level.

Single correct option

Consider the following statements:
1. Decomposers form the first trophic level in a food chain.
2. All the energy at one trophic level is passed on to the next level.
Which of the statements given above is/are correct?
  1. A. 1 only
  2. B. 2 only
  3. C. Both 1 and 2
  4. D. Neither 1 nor 2
Show answer and solution

Answer: (D) Neither 1 nor 2

Producers (green plants) form the first trophic level, not decomposers, so statement 1 is false. Only about 10 percent of the energy is transferred to the next trophic level, the rest being lost as heat in respiration and in other life processes, so statement 2 is false. Neither statement is correct.
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Original question written in the NDA 2016 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake