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Consider the following statements.
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Consider the following statements.
(A) Chloroplasts are found in mesophyll cells of leaves.
(B) The light reactions take place in the stroma.
(C) The biosynthetic phase uses ATP and NADPH.
(D) Stroma lamellae contain both photosystems.
How many of the above statements are correct?
Your answer:
Correct answer: (b)
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Explanation
Why (b) is correct
Statements A (chloroplasts are in mesophyll cells) and C (the biosynthetic phase uses ATP and NADPH) are correct. B is wrong: light reactions take place in the thylakoids, not the stroma. D is wrong: stroma lamellae have only PS I. So two are correct.
Why the other options are wrong
- (a) · your answer Two statements, A and C, are correct.
- (c) · your answer B and D are wrong, so three is too many.
- (d) · your answer B and D are wrong.
NCERT point: Thylakoids: light reactions; stroma: biosynthetic phase.
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