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Which of the following statements is incorrect?

(a) Stroma lamellae have PS I only and lack NADP reductase. Your answer
(b) Grana lamellae have both PS I and PS II. Your answer
(c) Both ATP and NADPH + H⁺ are synthesised during non-cyclic photophosphorylation. Your answer
(d) Cyclic photophosphorylation involves both PS I and PS II. Correct

Your answer: Correct answer: (d)

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Explanation

Why (d) is correct

Cyclic photophosphorylation uses PS I only, not PS I and PS II, so statement (d) is the incorrect one. The other three statements are correct.

Why the other options are wrong

(a) · your answer This is correct: stroma lamellae have PS I but lack PS II and NADP reductase.
(b) · your answer This is correct: the grana lamellae carry both photosystems.
(c) · your answer This is correct: non-cyclic flow makes both ATP and NADPH + H⁺.

NCERT point: Cyclic flow takes place in the stroma lamellae, where PS II and NADP reductase are absent.

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