Question

Which one occurs during both cyclic and non-cyclic modes of phosphorylation?

Answer 1

Cyclic and non-cyclic photo-phosphorylation
In plants, there are two types of phosphorylation:
$\bullet$ Cyclic phosphorylation: The type of phosphorylation where the electrons are returned to their source i.e., photosystem.
$\bullet$ Non-cyclic phosphorylation: The type of phosphorylation where the electrons are not returned to their source i.e., photosystem.
Hence, formation of ATP occurs in both cyclic and non cyclic photophosphorylation.