In sugarcane plant ${ }^{14} \mathrm{CO}_2$ is fixed in malic acid, in which the enzyme that fixes…
In sugarcane plant ${ }^{14} \mathrm{CO}_2$ is fixed in malic acid, in which the enzyme that fixes $\mathrm{CO}_2$ is:
ribulose biphosphate carboxylase
phosphoenol pyruvic acid carboxylase
ribulose phosphate kinase
fructose phosphatase
Solution
In $\mathrm{C}_4$ plant, in chloroplasts of mesophyll cells PEP carboxylase is the key enzyme used in carbon fixation. Due to this enzyme PEP $+\mathrm{CO}_2$ converted into oxaloacetic acid.
Caution
Sugarcane is a $C_2$ plant.