Bacteria are unicellular microorganisms living on the earth and its atmosphere.
They are prokaryotic cells and hence have no nucleus.
They can live in any extreme climates and are are omnipresent.
They grow in colonies and can live as saprophytes and also as parasites.
In humans, animals and plants, they cause many diseases.
Due to this their identification is important in disease diagnosis.
Identifying them is possible by color, shapes and also colony characters.
However we will see bacteria based on shapes here.
Identify the types of bacteria according to their shape
- Rod Shaped
- Spherical shaped
- Comma shaped
- Spore form
- Clusters and bunches.
Rod Shaped: These bacteria are rod shaped like a stick. These bacteria are called as bacillus bacteria.
Examples of these bacteria are helicobacter pylori which cause gastric acidity, mycobacterium tuberculosis which cause tuberculosis etc.
Spherical bacteria: These bacteria are spherical in shape. They can be single, in two, four numbered.
They are oval, circular or spherical in shape. Bacteria causing pneumonia and gonorrheal infection have this shape.
Comma shaped: These bacteria are comma shaped or hair like.
The best example for this type of bacteria is cholera bacteria.
Spiral: These bacteria are long and spiral in shape. They are spring like with slight coil structure.
Examples of this bacterial shape is syphilis bacteria. It cause infection to the genitals in both male and females.
Spore form: These are bacteria which are formed into a protective form. They are seen in case of extreme conditions in which bacteria cannot survive.
Once the conditions are favorable, bacteria get of these spore forms. All the types of bacteria form spore. It is also considered as a type of bacterial reproduction.
Staphylococcus: These bacteria are a bunch of spherical bacteria.
Bacteria with different shapes are easy to identify once they are stained. They can be visible under the microscope in movable form or immovable form.