There are approximately 109 e1012 organisms per kilogram of a soil mass close to the ground surface. Among the microorganisms present in soil are bacteria, archaea and eukarya. Some of the important characteristics of bacteria and archaea include simple cell structure without membrane-enclosed nucleus, more than one chromosome and distinct chemical composition which are more pronounced than structure. Identification, characterization and classification of microorganisms are usually achieved using the type of cell wall, shape, nutrients, type of biochemical transformation, and DNA and RNA sequences