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Coelenterata/ nematoda : These are diploblastic animals. Finger like structures are called tentacles are present aroundcthe mouth. Example : Hydra. Annelida : They are long and cylindrical. They have circular segments. Example : Earth worm.
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Sry... nematoda characteristics which i 've written are wrng........ sry u can del my ans.
⇒ Annelid animals are bilaterally symmetrical and triploblastic.
⇒ they have a true body cavity
⇒ the body differentiation occurs in segmental fashion.
⇒ ex: Earthworm
the nematodes are also bilaterally symmetrical and triploblastic.
⇒ there is no true body cavity instead a pseudo coelom is present.
⇒ex : Ascaris

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