Whittaker's Five Kingdom Classification
    By Rozi Aisha Vijayan | December 10th 2010 08:59 AM | 2 comments | Print | E-mail | Track Comments
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    Hi My name is Rozita. I am 14 yr old student from Bombay in the 9th grade. I am excited to be a part of this website. My favorite subject is Science...

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    What is the basis of distinction in each of the four steps?

    This is the five kingdom classification given by scientist Whittaker (1969).This scheme was based on -

    Structure of Cells - {prokaryotic or eukaryotic }

    Structure of Organism - {unicellular or Multicellular}

    Mode of nutrition - Photosynthesis in green plants, absorption in fungi and ingestion in animals.

    The Kingdoms are further classified into sub groups at various levels as follows.


                              #Phylum/sub kingdom/*Division


    (# Phylum for animals)'
    (* Division for Plants)                                            Genus                            


     Thus by separating organisms on the basis of Hierarchy of characteristics into smaller and smaller groups we arrive at the basic unit of classification which is a species. Species include all organisms that are similar enough to breed and perpetuate. eg. all the house cats of the world belong to one species ( Felis domesticus) ; they may have some differences among themselves such as colour, height and lenght of the tail and yet they can inter breed.


    Is there something called a 'Multicellular Prokaryote' ?
    Yes Indeed. But only a few Prokaryotes such as myxobacteria have multicellular stages in life cycles. So you can agree with the fact of there being something called multicellular prokrayote.

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