One of the special characters of Coelenterata is the occurrence of

Hermaphroditism

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Flame cells

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Polymorphism

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Nematocysts

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Solution

The correct option is D Nematocysts

Coelenterates are acoelomate. They have a single opening which acts as mouth and anus. The opening is surrounded by tentacles. The tentacles have the special type of cells called nematocytes are present in Coelenterata only. These cells are used for food catching, defensive and offensive purposes.

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