Why is the C₄ pathway considered more efficient than the C₃ pathway?
The C₄ pathway reduces photorespiration by maintaining a high CO₂ concentration around RuBisCO, making it more efficient than the C₃ pathway.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Photosynthesis - Significance and Bacterial Photosynthesis