A) Chromatium
B) Oscillatoria
C) Rhodospirillum
D) Chlorobium
Correct Answer: B
Solution :
Oscillatoria is a photosynthetic cyanobacterium. In this, during photosynthesis water is electron donor and oxygen is a by-product, ie, oxygenic photosynthesis occurs. Rhodospirillum and Chlorobium are non-oxygenic photosynthetic, purple non-sulphur and green- sulphur bacteria. Chrbmatium is purple sulphur bacterium, also a non-oxygenic photosynthetic.
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