Monera originate from primitive type of life referred as a progenote. It is a kingdom of prokaryotes which includes organisms such as bacteria, cyanobacteria, mycoplasma etc. They are present almost everywhere. They have little difference in outer shape and form. These are unicellular organisms which have no specific mode of nutrition. They can be aerobic or anaerobic. Cell wall is present and is made of peptidoglycan with mucin covering. They have naked DNA. No membrane bound organelles are present. Endoplasmic reticulum, mitochondria are absent. They multiply by binary fission.
The kingdom monera has been divided into two groups which are: Archaebacteria – the ancient type and Eubacteria – the true type. The true type is further divided into bacteria and cyanobacteria.
