Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

Photophosphorylation is the process of utilizing light energy from photosynthesis to convert ADP to ATP. It is the process of synthesizing energy-rich ATP molecules by transferring the phosphate group into the ADP molecule in the presence of light. It is of two types: cyclic and non-cyclic photophosphorylation.
Meanwhile, substrate-level phosphorylation refers to the formation of ATP from ADP and a phosphorylated intermediate, rather than from ADP and inorganic phosphate, Pi, as is done in oxidative phosphorylation or photophosphorylation.
Thus, photophosphorylation does not involve substrate-level phosphorylation.