1. Archaebacteria : They evolve immediately after the origin of life on earth. Even now they are existing under extremely adverse conditions like very high temperature. They are also called oldest living fossils. The cell wall of archaebacteria is made up of polysaccharides and polypeptides, e.g., methanogens, etc.
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Bacterias are of two types :-
1. Archaebacteria : They evolve immediately after the origin of life on earth. Even now they are existing under extremely adverse conditions like very high temperature. They are also called oldest living fossils. The cell wall of archaebacteria is made up of polysaccharides and polypeptides, e.g., methanogens, etc.
2. Eubacteria : Cosmopolitan / Present everywhere.
The attachment has the diagram of eubacteria!