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The energy that drives photosynthesis comes from

(a) ATP stored in roots Your answer
(b) heat of the soil Your answer
(c) glucose of the previous day Your answer
(d) light Correct

Your answer: Correct answer: (d)

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Explanation

Why (d) is correct

Light energy drives photosynthesis. It is absorbed by chlorophyll and converted into the chemical energy of ATP and NADPH.

Why the other options are wrong

(a) · your answer ATP is made in the chloroplasts using light, not brought from roots.
(b) · your answer Heat from the soil does not drive photosynthesis.
(c) · your answer Stored glucose is used in respiration, not to drive photosynthesis.

NCERT point: Photosynthesis converts light energy into chemical energy.

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