The first evolved diploblastic, radially symmetrical and sexually dimorphic animals with tentacles belong to the phylum _____.

Protozoa

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Porifera

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Ctenophora

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Cnidaria

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Solution

The correct option is D
Cnidaria

The first evolved diploblastic, radially symmetrical and sexually dimorphic animals with tentacles are the cnidarians or coelenterates. They include a variety of animals from the hydra and jellyfishes to the beautiful corals.

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