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Phyla of kingdom Animalia

Explain the nine phyla of kingdom Animalia?

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The nine phyla of animal kingdom are: Porifera (or poriferans), Cnidaria (or cnidarians), Platyhelminthes (or flatworms), Echinodermata (or echinoderms) Nematoda (or roundworms), Mollusca (or molluscs), Annelida (or annelids), Arthropoda (or arthropods), and Chordata (or chordates).

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