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Assertion (A): Stroma lamellae can produce ATP but not NADPH.
Reason (R): Stroma lamellae lack PS I.

  • (a) Both A and R are true, and R is the correct explanation of A. Your answer
  • (b) Both A and R are true, but R is not the correct explanation of A. Your answer
  • (c) A is true but R is false. Correct
  • (d) Both A and R are false. Your answer
Your answer: Correct answer: (c)
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Explanation

Why (c) is correct

A is true: stroma lamellae carry out cyclic flow and make ATP, but no NADPH. R is false: stroma lamellae have PS I; they lack PS II and NADP reductase.

Why the other options are wrong

  • (a) · your answer R is false.
  • (b) · your answer R is false.
  • (d) · your answer A is true.
NCERT point: Stroma lamellae: PS I only.
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Practise Photosynthesis in Higher Plants
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