Whittaker 5 kingdom Classification - Biological Classification, Biology, Class 11 Class 11 Notes | EduRev

Class 11 : Whittaker 5 kingdom Classification - Biological Classification, Biology, Class 11 Class 11 Notes | EduRev

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(12) R. H. Whittaker (1969) :-

(A) He gave the Five kingdom system of classification.

(B) This classification was believed to be modern The five kingdom classification of Whittaker was based on 3 main characters

(a) Complexity of Cell :-Cell is prokaryote or Eukaryote , on this basis , kingdom Monera is formed. And all the prokaryotes are grouped in to it.

(b) Complexity of organism :-Organism is unicellular or multicellular , on this basis kingdom Protista was formed, and all the unicellular eukaryotes are grouped into it.

(c) Nutrition :-Organism is autotrophic or heterotrophic , on this basis kingdom Mycota, Plantae and Animalia were formed. Except fungi (heterotrophic) all the plants are autotrophs. Therefore fungi is separated from plants and placed in kingdom mycota. And remaining all the autotrophic plants are placed in kingdom - Plantae.
Since all the animals are heterotrophs, therefore they are placed in fifth kingdom i.e. kingdom Animalia.

FIVE KINGDOM

1. Monera :- All the prokaryotes (Eubacteria, Rickettsia Actinomycetes, BGA, Archaebacteria, Mycoplasma)

2. Protista :- All the Unicellular eukaryotes (Dinoflagellates, Diatoms, Euglenoids, Slime moulds and Protozoans)

3. Mycota :- True fungi

4. Plantae :- All the multicellular plants – Algae, Bryophyta, Pteridophyta, Gymnosperm,Angiosperm

5. Animalia :- All the multicellular animals

 Note : Carl Woese suggested separate kingdom for "Archaebacteria". He proposed six kingdom classification

  Plant Diversity,Botany,Class 11

Note : Domain is a super kingdom category and extra taxonamic catagory

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