Explanation:
- Bacteria are the sole members of the Kingdom Monera. They are the most abundant micro-organisms.
- On the basis of origin, bacteria can be divided into two types - Archaebacteria & Eubacteria
Archaebacteria:
- These bacteria are special since they live in some of the harshest habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens).
- Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions.
- For example - Methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals.
Additional Information
Eubacteria:
- There are thousands of different eubacteria or ‘true bacteria’.
- They are characterised by the presence of a rigid cell wall, and if motile, a flagellum.
- The Eubacteria can be both autotrophic & heterotrophic.
