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Stroma lamellae are the

(a) membranous tubules connecting the grana Correct
(b) stacks of thylakoids Your answer
(c) pigment granules in the stroma Your answer
(d) double membrane around the chloroplast Your answer

Your answer: Correct answer: (a)

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Explanation

Why (a) is correct

Stroma lamellae are flat membranous tubules that connect the thylakoids of different grana.

Why the other options are wrong

(b) · your answer Stacks of thylakoids are the grana.
(c) · your answer Pigments are in the membranes, not in granules in the stroma.
(d) · your answer The double membrane around the chloroplast is the envelope.

NCERT point: Stroma lamellae have PS I only; they lack PS II and NADP reductase.

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