The calvin cycle proceeds in three stages: (A) Carboxylation, during which CO2 combines with ribulose-1,5-bisphosphate. (B) Reduction, during which carbohydrate is formed at the expense of the photochemically made ATP and NADPH. (C) Regeneration during which the CO2 acceptor ribulose-1,5-bisphosphate is formed again so that the cycle continues.
Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. NEET 2024 Botany, Photosynthesis in…
NEET UG 2024 — Botany Photosynthesis in Higher Plants
2024mcqmedium
Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. 
Official previous-year question
Held on 30 Apr 2024 · Verified 9 Jul 2026.
Options
- A
A-Carboxylation, B-Regeneration, C-Reduction
- B
A-Reduction, B-Decarboxylation, C-Regeneration
- C
A-Carboxylation, B-Reduction, C-Regeneration
- D
A-Reduction, B-Carboxylation, C-Regeneration
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NEET UG Photosynthesis in Higher Plants in other years
Photosynthesis in Higher Plants 2025Photosynthesis in Higher Plants 2023Photosynthesis in Higher Plants 2022Photosynthesis in Higher Plants 2021Photosynthesis in Higher Plants 2020Photosynthesis in Higher Plants 2019Photosynthesis in Higher Plants 2018Photosynthesis in Higher Plants 2017Photosynthesis in Higher Plants 2016Photosynthesis in Higher Plants 2015Photosynthesis in Higher Plants 2013Photosynthesis in Higher Plants 2012
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Match List I with List II: $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Chlorophyll a} & \text{(i)} & \text{Yellow-green} \\\hline \text{B.} & \text{Chlorophyll b} & \text{(ii)} & \text{Yellow} \\\hline \text{C.} & \text{Xanthophylls} & \text{(iii)} & \text{Blue-green} \\\hline \text{D.} & \text{Carotenoids} & \text{(iv)} & \text{Yellow to Yellow-orange} \\\hline\end{array}$ Choose the option with all correct matches.
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Which of the following statements about RuBisCO is true?
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How many molecules of ATP and NADPH are required for every molecule of $\mathrm{CO}_2$ fixed in the Calvin cycle?
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Given below are two statements: Statement I: In $\mathrm{C}_3$ plants, some $\mathrm{O}_2$ binds to RuBisCO, hence $\mathrm{CO}_2$ fixation is decreased. Statement II: In $\mathrm{C}_4$ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. In the light of the above statements, choose the correct answer from the options given below:
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Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. $\mathrm{CO}_2$ D. ATP E. NADPH Choose the correct answer from the options given below:
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Other Botany topics for NEET UG
Keep practicing Photosynthesis in Higher Plants
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