Cyanobacteria: Definition, Characteristics, Occurrence, Cell Structure, Reproduction, and, Importance
The name cyanobacteria come from their color, giving them their other name, “blue-green algae”, The cyanobacteria are also known as Cyanophyceae because of their blue color. they are also called micro-alga, blue-green algae. It is the largest gram-negative bacteria. The cyanobacteria are also called oxy–photo–bacteria because it contains PS1 and PS2. The PS2 which is present is involved in the water broke down means there is the release of oxygen. When it performs photosynthesis it releases oxygen so we can say it is oxygenic photosynthesis, due to this oxygenic photosynthesis was performed by cyanobacteria, a primitive earth atmosphere that was anaerobic that was changed to present-day earth atmosphere i.e aerobic. this is the only bacterial group that shows oxygenic photosynthesis. the present-day oxygen which is present today is due to the presence of their activity i.e cyanobacteria.