Archaebacteria()
Group of bacteria whose members differ from the eubacteria
in certain physical, physiological, and genetic features (e.g., cell-wall
components).
Archaebacteria are aquatic or terrestrial microorganisms
that exhibit a diversity of shapes, including spherical, rod-shaped, and spiral
forms. They survive in various extreme environments, including very hot or
salty ones. Some require oxygen; some do not. Some produce methane as an end
product; others depend on sulfur for their metabolism.
Source:Britannica encyclopedia
