During non-cyclic electron transport of photosynthesis of higher plants, A is the ultimate electron donor and B is the ultimate electron acceptor. A and B are respectively.
In the non-cyclic electron transport of photosynthesis of higher plants, the electrons of water ultimately reach to form NADPH after passing through Mn, Tyrosine or , P 680, Pheo, , PQ, Fe.S protein, Cytochrome f, Plastocyanin, P700, and , ferredoxin and FNR enzyme.