Difference between Cyclic and Noncyclic Photophosphorylation

In cyclic photophosphorylation, the electrons released from photosystem I are transferred back to the same photosystem, leading to the synthesis of ATP only. On the other hand, in noncyclic photophosphorylation, the electrons flow from photosystem II to photosystem I, resulting in the production of both ATP and NADPH.