Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

${\mathrm{C}}_4$plants are called so because the first product of carbon-di-oxide fixation is oxaloacetic acid, which has 4 carbon compounds.${\mathrm{C}}_4$plants have a special composition as their leaves show response to high light intensities and they can tolerate high temperatures. The primary acceptor of${\mathrm{C}\mathrm{O}}_2$, that is phosphoenolpyruvate (PEP) is found in the mesophyll cells which is fixed with the help of an enzyme PEP carboxylase.