Question

mention two condition under which PS-| occur? ​

Answer 1

Answer:

There are two photosystems acting in series within the thylakoid membranes of the chloroplast that catalyze the light induced charge separation: Photosystem I (PSI) and Photosystem II(PSII). ... Photosystem I absorbs longer wavelength light (680 nm) and funnels the energy to a special chlorophyll a molecule called P700.

Answer 2

Photosystem I is located on the outer surface of the thylakoid membrane and is bind to the special reaction center known as P700, whereas PS II is located on the inner surface of the thylakoid membrane and the reaction center is known as P680

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