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Q.
Which is the first $CO_2$ acceptor enzyme in $C_4$ plants?
Photosynthesis in Higher Plants
Solution:
$C _{4}$ pathway was first reported in members of family Gramineae
(grasses) like sugarcane, maize, sorghum, etc. These $C_{4}$ plants have a characteristic leaf anatomy called Kranz anatomy. So in
chloroplasts of mesophyll cells -PEPCo (PEP carboylase) is the key enzyme used to fix $CO _{2}$ in $C _{4}$ plants Oxaloacetic acid is a 4 -
C compound and is the first stable product so this pathway is known as $C _{4}$ cycle.