Five Kingdom System

 Five Kingdom System

American biologist Robert H. Whittaker in 1969 putfoth five kingdom system for living things, recognizing Monera ,Protista, Fungi ,Plantae and Animalia as a distinct kingdoms. This was done on the basis of their characteristic features such as cell structure ,mode of nutrition, mode of reproduction and body organization.

Monera- includes  unicellular organisms, mode of nutrition is absorptive some are photosynthetic bacteria ,prokaryotic ex. Bacteria

Protista- includes mainly unicellular organisms, mode of nutrition is  heterotrophic , eukaryotic, Some have a cilia or flagella ,reproduce sexually or asexually ex-Amoeba, Paramecium

Fungi- includes multicellular organisms, eukaryotic , saprophytic mode of nutrition, cell wall is made up of chitin  and cellulose ,reproduce vegetatively, asexually or sexually  ex-. Agaricus, mushrooms  

Plantae -includes multicellular , eukaryotic organisms, autotrophic, contain special cell organelle called chloroplasts ex.-trees , flowering plants like Roses ,Mango

Animalia- includes multicellular, eukaryotic  organisms. Cell wall is absent, heterotrophic mode of nutrition.. Sexual reproduction   ex- Birds, Fishes, Man