Q. 54.5( 10 Votes )

What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation?

A. 100%

B. 50 %

C. 1-5%

D. 2-10%

Answer :

B: 50%

50% of the total incident solar radiation is PARs but only 2-10% of PARs is captured by plants. So 50% of the incident rays are PARs in total, however only 2-10% is CAPTURED by them.

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