Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because

Options

A. Effective pumping of `CO_(2)` into bundle sheath cells
B. RuBisCO in `C_(4)` plants has higher affinity for `CO_(2)`
C. Four carbon acids are primary initial `CO_(2)` fixation products
D. Primary fixation of `CO_(2)` is mediated via PEP carboxylase

Answer

D

Explanation

Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` because primary fixation of `CO_(2)` is mediated via PEP carboxylase