State four physiological differences between C3 and C4 plants.

C3 plants C4 plants
Carbon dioxide acceptor is RUBP Carbon dioxide acceptor is PEP
First stable product is PGA First stable product is Oxaloacetic acid (OAA).
Photorespiration occurs Photorespiration does not occur.
Requires 18 ATP for the  synthesis of one glucose molecule Require 30 ATP for the synthesis of one glucose molecule.