-can grow in hot and dry environments
-involve PEP carboxylase
-organic acids are produced before Calvin Cycle takes place
Differences
-Stomata in CAM plants can only open during nighttime while those in C4 plants can open whenever CO2 is needed
-In C4 plants, first part of carbon fixation and Calvin Cycle occur in mesophyll cell and bundle-sheath cell respectively. In CAM plants, the 2 processes occur in stroma.
-In C4 plants, first part of carbon fixation and Calvin cycle take place through out the whole day. In CAM plants, carbon fixation occurs during the night and Calvin Cycle occurs during the day.
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