Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria. They are single-celled organisms with no true nuclear membrane (prokaryotic organisms.
Characteristics
➢ They are typically unicellular organisms (but one group is mycelial).
➢ The genetic material in these organisms is the naked circular DNA.
➢ A nuclear envelope is absent.
➢ Both, ribosomes and simple chromatophores are the only subcellular organelles in the cytoplasm.
➢ Sap vacuoles do not occur. Instead, gas vacuole may be present.
➢ The predominant mode of nutrition is absorptive but some groups are photosynthetic (holophytic) and chemosynthetic.
➢ The organisms are non-motile or move by the beating of simple flagella or by gliding