Which of the following statements is true with regard to the light reaction of photosythesis

Options

A. In PS-II the reaction centre chlorophyll -a has an absorption peak at 700 nm and is called `P_(700)`
B. In PS-I the reaction centre chlorophyll -a has an absorption maxima at 680 nm and is called `P_(680)`
C. The splitting of water molecule is associated with PS-I
D. Photosystem -I and II are involved in Z-cheme

Answer

D

Explanation

Photophosphorylation is the synthesis of ATP from ADP and inorganic phosphate in the presence of sum light .When the two photosystems , work in a series, first PS-II and then the PS-I , a process called non - cyclic photophosphorylation occurs. The two photosystems are connected through an electron transport chain in the Z scheme (due to the shape of path of electrons flow.) Both ATP and `NADPH+H^(+)` are synthesised by this kind of electron flow.