Which out of the following statements is incorrect regarding photosynthetic mechanisms?
Grana lamellae have both PS I and PS II
Cyclic photophosphorylation involved both PS I and PS II
Both ATP and NADPH + H+ are synthesised during non-cyclic photophosphorylation
Stroma lamellae lack PS II and NADP reductase
Cyclic photophosphorylation occurs when only PS I is functional and the electron is circulated within the photosystem . It typically happens in the stroma lamellae, which lack PS II and the NADP reductase enzyme . Therefore, the statement claiming it involves both photosystems is incorrect. The other statements are correct: Grana lamellae possess both PS I and PS II , and non-cyclic photophosphorylation synthesises both ATP and NADPH + H+ .
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