Question

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 1

Answer:

(b) 50 %

Photosynthetically active radiation or PAR constitutes about 50% of the total incident solar radiation.

Answer 2

Answer:

50℅

Explanation:

Around 50% of the total radiation from sunlight falls under photosynthetically active radiation and supports the process of photosynthesis. It constitutes the light of 400-700 nm wavelength which is absorbed by chlorophyll pigment. Out of which only 2 - 10% are captured by plants

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