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Rod shaped bacteria are known as BACILLUS. Bacillus is a genus of rod-shaped bacteria and a member of the division Firmicutes.Bacillus species are obligate aerobes. Ubiquitous in nature, Bacillus includes both free-living and pathogenic species.od shaped bacteria are known as BACILLUS. Bacillus is a genus of rod-shaped bacteria and a member of the division Firmicutes.
2. Shape of bacteria. Microscopic observation of bacterial cells. Shape of bacteria cell depends on the rigidity of cell wall. There are three shapes of bacteria. a) Spherical or cocci shape. If the cells are spherical or ball shape then the cells are called as cocci or spherical shape bacteria. b) Cylindrical or rod shape.