KINGDOM MONERA. This basically comprises of bacteria which are prokaryotes


General characteristics

  • They are unicellular with cells occurring either alone or in colonies.
  • The cells lack membrane bound organelles.
  • The free living bacteria have flagella
  • Some are parasitic and others are saprophytic
  • The cell wall is covered with mucin
  • They reproduce asexually by means of spores or binary fission

Economic importance of bacteria

  • Bacteria causes decay of dead plants and animals thus releasing nutrients for use by green plants
  • Rhizobium converts the nitrogen into nitrates in the soils
  • Bacteria manufacture vitamin B12 and k
  • Used in curing tea and tobacco, making silage /retting flax. Curing is process of treating and preserving tea / tobacco
  • Bacteria destroys harmful organisms in sewage in the sewage treatment
  • Used in industrial processing of food like vinegar, cheese, and yoghurt
  • Symbiotic bacteria in ruminants help in digesting cellulose by secreting enzymes cellulosev
  • Bacteria cause decay and food spoilage
  • Denitrifying bacteria converts nitrates in to free nitrogen in the soil.
  • Some bacteria cause harmful diseases to man like anthrax.