NEET 2021 · Class 11

Photosynthesis in Higher Plants

Which of the following statements is incorrect?

  1. (A)Both ATP and NADPH + H+ are synthesized during non-cyclic photophosphorylation
  2. (B)Stroma lamellae have PS I only and lack NADP reductase
  3. (C)Grana lamellae have both PS I and PS II
  4. (D)Cyclic photophosphorylation involves both PS I and PS II

The NCERT line that answers it

Verbatim line

When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs due to cyclic flow of electrons (Figure 11.6).

Chapter
Photosynthesis in Higher Plants
Section
11.6 THE ELECTRON TRANSPORT
Page
9
Words matched
25 of 25

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

6, emb=1.0, combined=0.84). Verified: high — The span explicitly states 'When only PS I is functional... the phosphorylation occurs due to cyclic flow of electrons,' which directly contradicts option D's claim that cyclic photophosphorylation involves both PS I and PS II.

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Question text is reproduced from the published NEET 2021 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.