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PS II is found mainly in the

(a) stacked (appressed) thylakoids of the grana Correct
(b) outer membrane of the chloroplast Your answer
(c) stroma Your answer
(d) unstacked stroma lamellae Your answer

Your answer: Correct answer: (a)

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Explanation

Why (a) is correct

PS II is located mainly in the stacked (appressed) thylakoids of the grana. The unstacked stroma lamellae have PS I but no PS II.

Why the other options are wrong

(b) · your answer The outer chloroplast membrane has no photosystems.
(c) · your answer Photosystems are in the thylakoid membranes, not the stroma.
(d) · your answer Stroma lamellae lack PS II.

NCERT point: This is why cyclic photophosphorylation (PS I only) takes place in the stroma lamellae.

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