Major and Minor Phyla

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Major and Minor Phyla

  • Concept of major or minor phyla depends on:-

  1. Number of species and individuals.
  2. Participation in ecological communities.
  • 9 are regarded as major phyla : Protozoa, Porifera, Colenterata, Platyhelminthes, Nematodes, Molluscs, Annelida , Arthropoda, Echinodermata 
  • Minor phyla : Rotifera, Acanthocephala, Nemertinea , Pogonophora

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