Q. Which of the following statements is true with regard to light reaction of photosynthetic mechanism in plants?
A) Chlorophyll-$\alpha$ occurs with peak absorption at 680 nm in photo system-I and at 700 nm in photo system-II
B) Magnesium and sodium ions are associated with photolysis of water molecules
C) $O_{2}$ is evolved during cyclic photophosphorylation
D) Photo system-I and II are both involved in non-cyclic photophosphorylation
Explanation
Both PS-I and PS-II are involved in non-cyclic photophosphorylation.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.