Aristotle
was the first to use scientific basis for classification. He used morphological
characters to differentiate plants and animals. Further, Aristotle classified
Plants into trees, shrubs and herbs. He classified animals based on presence or
absence of the red blood.
Later
Linnaeus proposed two kingdoms, viz. Plant Kingdom and Animal Kingdom. This
system became very popular because of its simplicity and was used for a long
time by scientists. But as the knowledge about finer characteristics of living
being increased, scientists started to find that there were some organisms
which couldn’t fit either of the kingdoms.
A
need was being felt to include more number of characteristics like mode of
reproduction, evolutionary relationship, etc. to facilitate better
categorization.
Thus
the latest ‘Five Kingdom Classification’ evolved. Five kingdoms are as follows:
1.
Monera.
2.
Protista.
3.
Fungi
4.
Plantae.
5.
Animalia
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