Kingdom

Kingdom is a taxonomic rank in Biology which is considered to be the highest rank under the 5 Kingdom Classification System.

Kingdom Classification
Kingdom Classification has been continously modified over the last vbvbvvvbvvvv 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)
The five kingdoms introduced under Robert Whittaker (1969) were as follows: In 1977, Carl Woese broke up Monera into Archaebacteria and Eubacteria.
 * Monera (Prokaryotic, Unicellular,  Hetero/Autotrophic )
 * Protista (Eukaryotic, Unicellular, Hetero/Autotrophic)
 * Fungi (Eukaryotic, Multicellular, Saprotrophic)
 * Plantae (Eukaryotic, Multicellular, Autotrophic)
 * Animalia (Eukaryotic, Multicellular, Heterotrophic)

7 Kingdom Classification
Modern 7 kingdom classification by Cavalier-Smith is as follows:
 * Archaebacteria
 * Eubacteria
 * Protista
 * Chromista
 * Fungi
 * Plantae
 * Animalia