Assertion: The stoma lamellae have both PS I and PS II.
Reason: The grana lamellae lack PS II and well as NADP reductase enzyme.

Assertion: Stroma lamellae have both PS I and PS II but the membrane of grana lack PS II as well as NADP reductase. Reason: Cyclic photophosphorylation also occurs when only light of wavelength below 680 nm is available for excitation.

PS I and PS II occur over

PS I and PS II occur over

Bacteria contain both PS I and II.

Assertion : The stromal thylakoids are rich in both PS I and PS II Rason : The granal membranes are rich in ATP synthetase.

Differentiate PS I and PS II.

PS II is found in

Assertion :- In Stroma lamellae cyclic photophosphorylation is the only mean of ATP synthesis Reason :- In stroma lamellae both PS-II and NADP reductase enzyme are absent.