Q. Which of the following statements is true with regard to the light reaction of photosynthesis ?

Q. Which of the following statements is true with regard to the light reaction of photosynthesis ?

(a) In PS-II the reaction centre chlorophyll-a has an absorption peak at 700 nm, hence is called P₇₀₀

(b) In PS-I the reaction centre chlorophyll-a has an absorption maxima at 680 nm, and is called P₆₈₀

(c) The splitting of water molecule is associated with PS-I

(d) Photosystem I and II are involved in Z scheme

Solution :

Correct option : D Z-scheme is a diagrammatic representation of the electron flow in cyclic phosphorylation and non-cyclic phosphorylation, showing the change in energy potential of the electrons. It involves both the photosystems PS I and II.