Photosynthetic bacteria do not contain
(2) PS-I and PS-II
(1) Photosynthetic bacteria do not contain quantasome. Photosynthetic bacteria are of two types oxygenic (cyanobacteria) and anoxygenic (H2S donor like purple sulphur and green sulfur bacteria and organic donor like purple non-sulfur and green non-sulfur bacteria). Bacteria only have one photosystem i.e. type I reaction centre (PS I - 700) in green sulphur bacteria and type II reaction center (PS II - 680) in non sulphur bacteria.