Kingdom Classification Edit
Kingdom Classification has been continously modified over the last two centuries, with different taxonomists putting different groups under it. Charles Linneus used a 2 Kingdom Classification System. Robert Whittaker later introduced a 5 Kingdom Classification. Woese introduced a Six Kingdom Classification, and recently in 2015 a Seven Kingdom Classification was introduced by Cavalier-Smith.
5 Kingdom Classification (Whittaker)Edit
The five kingdoms introduced under Robert Whittaker (1969) were as follows:
- Monera (Prokaryotic, Unicellular, Hetero/Autotrophic)
- Protista (Eukaryotic, Unicellular, Hetero/Autotrophic)
- Fungi (Eukaryotic, Multicellular, Saprotrophic)
- Plantae (Eukaryotic, Multicellular, Autotrophic)
- Animalia (Eukaryotic, Multicellular, Heterotrophic)
In 1977, Carl Woese broke up Monera into Archaebacteria and Eubacteria.
7 Kingdom ClassificationEdit
Modern 7 kingdom classification by Cavalier-Smith is as follows:
- Viruses have not been fitted into any kingdom as they only replicate inside a living "host" cell.