Photorespiration is a light dependent process which occurs in C3 plants. It is opposite to photosynthesis because during this process, uptake of O2 and release of CO2 take place. Due to presence of Kranz anatomy, C4 plants do not show photorespiration.
A process that makes important difference between C_3 and C_4 plants is
NEET UG 2012 — Botany Photosynthesis in Higher Plants
A process that makes important difference between C3 and C4 plants is
Held on 30 Apr 2012 · Verified 9 Jul 2026.
Options
- A
transpiration
- B
glycolysis
- C
photosynthesis
- D
photorespiration
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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.
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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