HORTICULTURE

Detailed explanation-1: -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 ADP molecule in the presence of light.

Detailed explanation-2: -In photophosphorylation, light energy is used to pump protons across a biological membrane, mediated by flow of electrons through an electron transport chain. This stores energy in a proton gradient. As the protons flow back through an enzyme called ATP synthase, ATP is generated from ADP and inorganic phosphate.

Detailed explanation-3: -The process of ATP formation in chloroplasts in the presence of light is known as photophosphorylation. So, the answer is ‘Phosphosphorylation’.