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Hierarchy of Classification

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Three kingdom system of classification - definition

  • Three kingdom classification was given by Ernst Haeckel.
  • The major group included in three kingdom is Plantae, Protista and Animalia.
  • Plantae consists of eukaryotic and autotrophic organism.
  • Protista contains eukaryotic and heterotrophic as well as an autotrophic organism.
  • Animalia contains eukaryotic and heterotrophic organism.

Taxonomic category- Division - definition

  • A group of closely related classes is called as phylum.
  • In the plant kingdom, the term phylum has been replaced with division.

Taxonomic category- Kingdom - definition

  • The group of all the related phyla is called the Kingdom.
  • For example, all autotrophic organisms which are eukaryotic and contain chloroplast are kept under the plant kingdom.
  • Similarly, all heterotrophic organisms which are eukaryotic and lack a cell wall are kept under animal kingdom.

Related Concepts

Features of Plant and Animal Kingdom

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Basic Knowledge of Five Kingdom Classification

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Monera

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Protista

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Fungi

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