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Biological Classification


  • The process of grouping living organisms into convenient categories based on simple characters is known as classification.

1. Two kingdom classification

  • Carolus Linnaeus divided all living things into two kingdoms- Plantae and Animalia.

2. Five kingdom classification

  • R.H. Whittaker divided all living things into five kingdoms- Monera, Protista, Fungi, Plantae, and Animalia.

  • The main criteria for classification included

    • cell structure

    • thallus organisation

    • mode of nutrition

    • reproduction

    • phylogenetic relationship (evolutionary relationship)


Kingdom Monera 

  • It includes all prokaryotes. Bacteria are the sole members of this kingdom.

  • They have auto‚Ķ

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