The first reaction of photorespiration occurs in the stroma of chloroplasts. In this reaction, RuBisCO in the presence of oxygen shows oxygenase activity. In peroxisomes, the glycolate transferred from chloroplasts takes up O2 and forms the glyoxylate, whereas H2O2 is released as a byproduct.
During photorespiration, the oxygen consuming reaction (s) occur in:
NEET UG 2006 — Botany Photosynthesis in Higher Plants
During photorespiration, the oxygen consuming reaction (s) occur in:
Held on 30 Apr 2006 · Verified 9 Jul 2026.
Options
- A
stroma of chloroplasts
- B
stroma of chloroplasts and mitochondria
- C
stroma of chloroplasts and peroxisomes
- D
grana of chloroplasts and peroxisomes
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More NEET UG Photosynthesis in Higher Plants questions
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.
Which of the following statements about RuBisCO is true?
Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. 
How many molecules of ATP and NADPH are required for every molecule of $\mathrm{CO}_2$ fixed in the Calvin cycle?
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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