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The splitting of water during photosynthesis is linked to

(a) PS I Your answer
(b) the cytochrome b₆f complex only Your answer
(c) PS II Correct
(d) the Calvin cycle Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

Water splitting is linked to PS II. The water-splitting complex is on the lumen side of PS II and supplies electrons to P680.

Why the other options are wrong

(a) · your answer PS I gets its electrons from plastocyanin, not from water.
(b) · your answer The cytochrome complex passes electrons along; it does not split water.
(d) · your answer The Calvin cycle does not split water.

NCERT point: Cyclic flow (PS I only) does not split water or release O₂.

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