[Solved] Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :

Q.	Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :
A.	Four carbon acids are the primary initial CO2 fixation production.
B.	The primary fixation of CO2 is mediated via PEP carboxalase.
C.	Effective pumping of CO2 into bundlesheath cells.
D.	Rubisco in C4 plants has higher affinity for CO2.
Answer» B. The primary fixation of CO2 is mediated via PEP carboxalase.

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