Classification of bacteria based on their shape

which induces different shapes of bacteria

1. CLASSIFICATION OF BACTERIA N. H. SHANAR REDDY II nd M.Sc.(Plant Pathology) Annamalai University

2. BASED ON SHAPE COCCI BACILLUS SPIRILLUM

3. COCCUS MICROCOCCUS DIPLOCOCCUS STREPTOCOCCUS STAPHYLOCOCCUS TETRADS SARCINAE

4. COCCUS These are spherical in shape, may be arranged singly (micrococcus),in pairs ( diplococcus ),chains (streptococcus),irregular grape like clusters (staphylococcus),in box like cubical pockets ( sarcinae ),pair of four cells in same plane(tetrads).

5. DIFFERENT SHAPES OF COCCI

6. BACILLUS These are straight rod or cylindrical or ellipsoidal in shape, occurs mostly singly,sometimes ( microbacilli ) in pairs ( diplobacilli ) in chains ( streptobacilli ) or in parallel palisade like arrangements.

7. DIFFERENT SHAPES OF BACILLUS

8. SPIRILLUM These are cork screw shaped i.e the rods that are hellically curved with a twist . Rod shape bacteria with less than one complete turn or twist have vibroid shape where as those with one or more complete turns have helical shapes.

9. DIFFERENT SHAPES OF SPIRILLUM

10. THANK YOU