The five kingdoms classification was proposed by R.H. Whittaker. This classification was based upon certain characters like mode of nutrition, thallus organization, cell structure, phylogenetic relationships and reproduction. This form of classification includes five kingdoms Monera, Protista, Fungi, Plantae and Animalia.
KINGDOM MONERA
The bacteria are categorized underneath the Kingdom Monera.
KINGDOM PROTISTA
They are unicellular and eukaryotes.
KINGDOM FUNGI
The fungi are filamentous; excluding yeast (single celled). Their figure comprises of slender, long thread-like constructions; called hyphae.
KINGDOM PLANTAE
The kingdom is filled with all eukaryotes which have chloroplast.
KINGDOM ANIMALIA
All multicellular eukaryotes which are heterotrophs and lack cell wall are set aside under this kingdom.