Q32 / 200 · NEET 2011 (Screening) · Botany

Of the total incident solar radiation the proportion of PAR is

  • A
    about $60 \%$
  • Correct answer
    B
    less than $50 \%$
  • C
    more than $80 \%$
  • D
    about $70 \%$

Solution

PAR (Photosynthetically active radiation) designates the spectral range of solar radiation from 400 to $700 \mathrm{~nm}$ that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation the proportion of PAR is less than $50 \%$.

Hence, the correct answer is option: 'B'.

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