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NEET Botany Photosynthesis in Higher Plants 2024 NEET 2024

NEET Botany Question (2024) — Solution

Question

Given below are two statements: Statement I: In C _3 plants, some O _2 binds to RuBisCO, hence CO _2 fixation is decreased. Statement II: In 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:

Options

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

Answer

B. Statement I is true but Statement II is false

Step-by-step solution

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

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