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According to five kingdom classification, protozoa are placed in
1. Protissta
2. Monera
3. Fungi
4. Animalia

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Correct Answer - Option 1 : Protissta

Concept-

  • The five-kingdom system proposed by R.H. Whittaker (1969).
  • The main criteria for classification used by him- 
    • (1) Cell structure (2) Body organization (3) Mode of nutrition (4) Reproduction (5) Phylogenetic relationships.
  • The kingdom defined by him was named-
    • Monera- All the prokarytotes
    • Protista- All the Unicellular eukaryotes
    • Fungi- True fungi
    • Plantae- All the multicellular plants
    • Animalia- All the multicellular animals

Explanation-

  • Protozoa is 3rd largest phylum.
  • They believed to be primitive relatives of animals.
  • Protozoa include unicellular eukaryotes. Therefore comes under Kingdom Protista.

  • Protista forms a link with the others dealing with plants, animals, and fungi.
  • The boundaries of this kingdom Protista are not well defined.

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