Biology
Grade-10
Easy

Question

What is the right percentage of solar energy that is photosynthetically active radiation (PAR)?

  1. 100 percent
  2. 85 percent
  3. 20 percent
  4. 50 percent

hintHint:

Only half of solar radiation forms PAR.

The correct answer is: 50 percent


    • The spectral range of solar radiation that organisms utilize in the photosynthesis process is called as photosynthetically active radiation.
    • The wavelength is between 400 to 700 nm in the light spectrum.
    • The chlorophyll present in plants absorb this light and utilize it for photosynthesis.
    • Around 50% of the solar radiation forms the photosynthetically active radiation.

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