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The role of the antenna molecules in a photosystem is to

(a) split water and release oxygen into the lumen Your answer
(b) pump protons into the lumen for ATP synthesis Your answer
(c) absorb light and pass the energy to the reaction centre Correct
(d) reduce NADP⁺ to NADPH on the stroma side Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

The antenna (light-harvesting) molecules absorb light of different wavelengths and pass the energy to the reaction centre.

Why the other options are wrong

(a) · your answer Water is split by the water-splitting complex of PS II, not the antenna.
(b) · your answer Protons are pumped by the electron transport chain, not the antenna.
(d) · your answer NADP⁺ is reduced by NADP reductase.

NCERT point: Antenna pigments make the photosystem a more efficient light trap.

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The reaction centres of PS I and PS II differ in their Which of the following is present in both PS I and PS II? Which of the following lists the events of the light reaction?