Which group does not contain polyp?

Hydrozoa

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Scyphozoa

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Anthozoa

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Calcarea

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Solution

The correct option is D Calcarea
Hydrozoa, Scyphozoa and Anthozoa are classes of the Cnidarians or Coelenterata that all have similar body morphology with a polyp and/or medusa. The class Calcarea consists of Sponges from the phylum Porifera whose body is covered with a calcareous shell and spicules but no polyp.
So, the correct answer is 'Calcarea'.

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