NEET2024BotanyPhotosynthesis in Higher PlantsActual
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
- ABoth Statement I and Statement II are false
- BStatement I is true but Statement II is false
- CStatement I is false but Statement II is true
- DBoth Statement I and Statement II are true
Correct 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.