NEET2026BiologyChapterActual
Which of the following statements is correct regarding Photosystem II (PS II) in higher plants?
Options
- AIts reaction centre chlorophyll a has an absorption maximum at 700 nm.
- BIt is physically located on the inner side of the thylakoid membrane.
- CIt is the primary photosystem involved in cyclic photophosphorylation.
- DIt is found abundantly in the stroma lamellae membranes.
Correct answer
B. It is physically located on the inner side of the thylakoid membrane.
Step-by-step solution
Photosystem II (PS II) has a reaction centre with an absorption maximum at 680 nm, whereas Photosystem I (PS I) has an absorption maximum at 700 nm. The water-splitting complex is associated with PS II, which is physically located on the inner side of the thylakoid membrane. This allows the protons produced during the splitting of water to be released directly into the thylakoid lumen. Cyclic photophosphorylation involves only PS I, not PS II. Stroma lamellae membranes lack PS II and NADP reductase, containing only