Archaebacteria are able to survive in harsh conditions due to the presence of branched lipid chain in cell membrane that reduces fluidity of cell membrane.
It includes halophiles which are exclusively found in saline habitats. Notes : The halophiles, named after the Greek word for “salt-loving”, are extremophiles that thrive in high salt concentrations. While most halophiles are classified into the domain Archaea, there are also bacterial halophiles and some eukaryotic species, such as the alga Dunaliella salina and fungus Wallemia ichthyophaga.
47.
Symbiotic prokaryotic organism which fix atmospheric N2
Methanogens are archaebacteria, abundant in cattle yard and paddy fields. Notes : Methanogens produce methane as a metabolic byproduct in hypoxic conditions. They are prokaryotic and belong to the domain of archaea.