Morphology of Bacteria- Microbiology notes|ICDS Supervisor Kerala PSC
![]() |
Morphology of Bacteria- Microbiology |
Morphology of Bacteria
Size:
- Bacteria come in a great many sizes and several shapes.
- Most bacteria range from 0.2 to 2.0 μm in diameter and from 2 to 8 μm in length. (an overall average size of 1 to 10 μm.)
Shape:
They have a few basic shapes:
1. Spherical coccus (plural: cocci, meaning round),
2. Rod-shaped bacillus (plural: bacilli)
3. Spiral.
Cocci:
Cocci are usually round but can be oval or elongated.
When they
divide to reproduce, they remain attached to each other.
Classification According to Plane of Division:
Diplococci:
Those Cocci that remain in pairs after dividing are called diplococci.
Streptococci:
Those cocci that divide and remain attached in chainlike patterns are
called streptococci.
Tetrad:
Those cocci that divide into two planes and remain in groups of four
are known as tetrads.
Sarcinae:
Those cocci that divide in three
planes and remain attached in
cube like groups of eight are called
sarcina.
Staphylococci:
Those cocci that divide in multiple
planes and form grape like clusters
or broad sheets are called staphylococci.
Bacilli:
Bacillus are the rod like bacteria
e.g. Bacillus anthracis
Single bacillus:
Most bacilli appear as single rods,
called single bacilli.
Diplobacilli:
Those bacilli which are appear in
pairs after division called Diplobacilli
Streptobacilli:
Those bacilli that found in chains
in single plane are called
Streptobacilli.
Monomorphic:
Bacteria that maintain single
shape called monomorphic or the
bacteria having same shape.
Pleomorphic:
Some bacteria can have many shapes known as pleomorphic.
e.g:
Corynebacterium, Pyogenesis.
-Some bacteria occur in the shape of star e.g. Stella.
- Some bacteria occur in the shape of rectangle e.g. Haloarcula.
- Some bacteria also appear triangular in shape.
This topic is important for the ICDS Supervisor Exam.Click HERE.
You can Go to more posts Regarding ICDS Supervisor Kerala PSC Here.
More ICDS Supervisor Kerala PSCSociology Notes Here
ICDS Supervisor Kerala PSC Homescience Notes Here
ICDS Supervisor Kerala PSC Food ,Nutrition and Health Notes Here
To Join Telegram, Click Here
This topic is important for the ICDS Supervisor Exam.Click HERE.
You can Go to more posts Regarding ICDS Supervisor Kerala PSC Here.
More ICDS Supervisor Kerala PSCSociology Notes Here
ICDS Supervisor Kerala PSC Homescience Notes Here
ICDS Supervisor Kerala PSC Food ,Nutrition and Health Notes Here
To Join Telegram, Click Here
No comments:
Post a Comment
Hope you like the Post, Kindly give your feedback here. Happy Learning :)