Re-NEET 2026 · Question 102 · Class 11

Photosynthesis in Higher Plants

Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P700)?

  1. (A)Chlorophyll b
  2. (B)Chlorophyll a
  3. (C)Xanthophylls
  4. (D)Carotenoids

The NCERT line that answers it

Verbatim line

The single chlorophyll *a* molecule forms the **reaction centre**.

Chapter
Photosynthesis in Higher Plants
Section
11.5 WHAT IS LIGHT REACTION?
Page
7
Words matched
43 of 43

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

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that in PS I the reaction centre chlorophyll a has an absorption peak at 700 nm, which directly identifies Chlorophyll a as the correct answer.

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Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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Question text is reproduced from the published Re-NEET 2026 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.