SELECT * FROM question_mgmt as q WHERE id=504 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=7 AND chapterId=39 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 12th biology Ecosystem what is the percentage of photosynthetically activ

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:

(b) 50%

Out of total incident solar radiation, about fifty percent of it forms photosynthetically active radiation or PAR.


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