A) phosphoenol pyruvate
B) oxalo acetic acid
C) phosphoglyceric acid
D) ribulose 1, 5- diphosphate
Correct Answer: A
Solution :
\[{{C}_{4}}\] plants are characterised by Kranz anatomy.\[{{C}_{4}}\] pathway of photosynthesis was discovered by Hatch and Slack. (1965). In \[{{C}_{4}}\] plants the\[C{{O}_{2}}\] combines with phosphoenol pyruvate (PEP) to form a 4-C compound oxaloacetic acid (Hence, named \[{{C}_{4}}\] plant). It is the first product of \[{{C}_{4}}\] cycle. On the other hand in \[{{C}_{3}}\] plants the \[C{{O}_{2}}\]combines with ribulose 1-5, diphosphate to form the 3-C-compound phosphoglyceric acid. It is the first stable product of \[{{C}_{3}}\] plants.
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