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प्रश्न
Name the various phyla of non-chordates with two examples.
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उत्तर
The non- chordates are divided into nine phyla:
(i} Protozoa > Euglena, Amoeba
(ii) Porifera > Sycon, Euplectella
(iii), Coelenterata > Hydra, Physalia
(iv) Platyhelminthes > Fasciola, Dugesia
(v) Nemathelminthes > Ascaris, Wuchereria
(vi) Annelida > Nereis, Hirudinaria
(vii) Mollusca > Unio, Pila
(viii) Arthropoda > Palemon, Periplaneta
(ix) Echinodermata > Antedon, Echinus
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