Question

Plants use …………… of the total energy absorbed by them in photosynthesis for producing their food.
(a) 40%
(b) 50%
(c) 5%
(d) 0.02%

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Answer

(d) 0.02%

Reason — Out of the 8% heat energy falling on plants, they use only 0.02% in photosynthesis for producing their food.

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