Q. C₄ plants are more efficient in photosynthesis than C₃ plants due to
A) Lower rate of photorespiration
B) Higher leaf area
C) Presence of larger number of chloroplasts in the leaf cells
D) Presence of thin cuticle
Explanation
[Solution from source] In C₄ plants, CO₂ is concentrated around RuBisCO in the bundle sheath cells, so its oxygenase activity, and with it photorespiration, is almost absent. This is why their productivity is higher. Having more chloroplasts is not the reason, and the mesophyll cells of C₄ plants do not carry out the Calvin cycle. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.