NEET 2024 Re · Class 11

Photosynthesis in Higher Plants

[DIAGRAM: A schematic of the Calvin cycle showing ribulose 1,5-bisphosphate reacting with carbon dioxide and water from the atmosphere to form intermediate A, conversion to 3-phosphoglycerate, reduction to intermediate B using ATP and NADPH, formation of triose phosphate, and regeneration of ribulose 1,5-bisphosphate through intermediate C, with triose phosphate also used for sucrose and starch synthesis.] Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option.

  1. (A)A-Carboxylation, B-Regeneration, C-Reduction
  2. (B)A-Reduction, B-Decarboxylation, C-Regeneration
  3. (C)A-Carboxylation, B-Reduction, C-Regeneration
  4. (D)A-Reduction, B-Carboxylation, C-Regeneration

The NCERT line that answers it

Verbatim line

For ease of understanding, the Calvin cycle can be described under three stages: carboxylation, reduction and regeneration.

Chapter
Photosynthesis in Higher Plants
Section
11.7 WHERE ARE THE ATP AND NADPH USED?
Page
12
Words matched
17 of 17

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 the three stages of the Calvin cycle in the exact order required to match option C: carboxylation, reduction, and regeneration.

We did this for 1,565 questions.

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.

Take the free 5-minute checkMore from this chapter

Question text is reproduced from the published NEET 2024 Re 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.