Photosystem I (PS I) and photosystem II (PS II) are named in the sequence in which they function during the light reaction.

Photosystem I (PS I) and photosystem II (PSII) ae named -

Photosystem I and Photosystem II are found in

Photosystem I and Photosystem II are found in

Photosystem II occurs in

Photosystem II occurs in

Photosystem II occurs in

Assertion: PS I and PS II are named in sequence of their function during the light reaction or photochemical phase. Reason: Each photosystem has one molecule of chlorophyll-a forming a light harvesting complex called antenna.