Ecosystem Structure and Function · NCERT Biology

In a terrestrial ecosystem, what percentage of the energy in the sunlight is typically captured by green plants (PAR)?

  1. 100%
  2. 50%
  3. 2-10%
  4. 20-30%
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Correct answer: 2-10%

Plants capture only 2-10 percent of the Photosynthetically Active Radiation (PAR). This small amount of energy sustains the entire living world through various food chains and webs.

Difficulty: Medium Question 10 of 20

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