The first product of CO2 fixation in Hatch and Stack plants is
Formation of oxalocetate by carboxylation of phosphoenol pyruvate (PEP in) bundle sheath cells
Formation of phoshoglyceric acid in mesophyll cells
Formation of bundle sheath cells
Formation of oxaloacetate by carboxylation of phosphoenol pyruvate (PEP) in the mesophyll cells