photosynthesis

Question: Photosynthesis in ${{C}_{4}}$plants is relatively less limited by atmospheric $C{{O}_{2}}$ levels because



1) Four carbon acids are the primary initial $C{{O}_{2}}$ fixation products
2) The primary fixation of $C{{O}_{2}}$ is mediated via PEP carboxylase
3) Effective pumping of $C{{O}_{2}}$ into bundlesheath cells
4) Rubisco in ${{C}_{4}}$plants has higher affinity for $C{{O}_{2}}$
Solution: Explanation: No Explanation
C4 CAM Photorespiration

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