`PS` I and `PS` II occur over

According to chemiosmotic theory PS I and PS II are connected by

PS I occurs in :

PS-I and PS-II , were discovered by

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

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.

What is the role of PS I and PS II in photosynthesis?

Where is PS- II and PS -I located in a chloroplast ?