Question

Why c4 plants photosynthetically more efficient than c3 plants?

Answer 1

In C4 plants photorespiration does not occurs.This is because thy have a mechanism that increases the concentration of CO2 at the enzyme site.thus the C4 pathway is more efficient than C3 in the sense of carbon fixaton.

Answer 2

Based on metabolic activities in plants, they are broadly classified into CAM, C3, C4, etc. These are pathways for carbon fixation during photosynthesis.

In C3 plants, chloroplasts are not present in the bundle sheath cells. Whereas, it is present in C4 plants.

Also, In C4 plants, photosynthesis occurs even when pores called stomata are closed.

C4 plants show high efficiency in photosynthesis than the C3 plants because they contain more chloroplasts.