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NDA 2023 GAT · General Knowledge · Ecology and Environment · medium

According to the 10 per cent law, the percentage of energy transferred from one trophic level to the next in a food chain is about

Single correct option

According to the 10 per cent law, the percentage of energy transferred from one trophic level to the next in a food chain is about
  1. A. 10 per cent
  2. B. 1 per cent
  3. C. 50 per cent
  4. D. 90 per cent
Show answer and solution

Answer: (A) 10 per cent

Only about 10 per cent of the energy is passed on to the next trophic level; the rest is lost as heat in respiration and as waste. This is why food chains are short and the pyramid of energy is always upright.
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Original question written in the NDA 2023 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