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The splitting of water molecules during photosynthesis is called

(a) phosphorylation Your answer
(b) carbon assimilation Your answer
(c) photolysis Correct
(d) red drop Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

The splitting of water in the light reaction is called photolysis. It gives electrons, protons and O₂.

Why the other options are wrong

(a) · your answer Phosphorylation is the addition of phosphate to ADP to make ATP.
(b) · your answer Carbon assimilation is the fixation of CO₂ into sugar.
(d) · your answer Red drop is the fall in photosynthesis in light beyond 680 nm.

NCERT point: Photolysis takes place at the water-splitting complex of PS II, on the lumen side.

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