The five kingdom system was developed by Robert H. Whittaker in 1969 and was built on the work of previous biologists such as Carolus Linnaeus.
Living things can be classified into five major kingdoms.
1. Kingdom prokaryote : Prokaryote is a kingdom or division in the classification organization developed for all life on Earth. This kingdom which is also elected as Monera contains all bacteria and blue-green algae (also known as Cyanobacteria).
2. Kingdom Protista or Protoctista : It is a kingdom of simple eukaryotic organisms usually made from a single cell or a colony of similar cells. Protists live in water, in moist terrestrial habitats, as parasites and other symbiotic in the bodies of multicellular eukaryotes.
3. Kingdom Fungi : A fungus is any member of the group of eukaryotic organisms that comprises microorganisms such as yeasts and molds as well as the more familiar mushrooms. These organisms are classified as a kingdom which is separate from the other eukaryotic life kingdoms of plants and animals.
4. Kingdom Plantae : This kingdom contains all land plants such as mosses, ferns, conifers and flowering plants etc. an amazing range of diverse forms. With more than 250,000 species they are second in size only to the arthropods. Plants have been around for a very long time.
5. Kingdom Animalia : All animals are members of the Kingdom Animalia, also called Metazoa. This Kingdom does not contain prokaryotes (Kingdom Monera, includes bacteria, blue-green algae) or protists (Kingdom Protista, includes unicellular eukaryotic organisms).
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