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Photosynthesis in Higher Plants question

2024 · Q46
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Photosynthesis in Higher Plants question

2024 · Q46

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1

Given below are two statements:

Statement I: In C3\mathrm{C}_3C3​ plants, some O2\mathrm{O}_2O2​ binds to RuBisCO\mathrm{RuBisCO}RuBisCO, hence CO2\mathrm{CO}_2CO2​ fixation is decreased.

Statement II: In C4\mathrm{C}_4C4​ 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:

  1. A
    Both Statement I and Statement II are true
  2. B
    Both Statement I and Statement II are false
  3. C
    Statement I is true but Statement II is false
  4. D
    Statement I is false but Statement II is true
View written solutionFree

Correct answer: C

In $\mathrm{C}_3$ plant, some $\mathrm{O}_2$ bind to RuBisCO, and hence $\mathrm{CO}_2$ fixation is decreased. Statement II is incorrect, photorespiration does not occur in $\mathrm{C}_4$ plants as they lack RuBisCO in mesophyll. Hence statement I is the only correct option.

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