NEET Botany Light Reaction MCQ Question with Solution

In the light reaction of photosynthesis, what is the primary role of the proton gradient across the thylakoid membrane?

A

To drive ATP synthesis by ATP synthase

B

To release oxygen molecules

C

To split water molecules

D

To transport electrons directly

Option A

The proton gradient across the thylakoid membrane provides the energy needed for ATP synthase to synthesize ATP, as explained in the NCERT context.

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NEET Botany Light Reaction MCQ Question