Which of the following is a characteristic feature of the phylum $Coelenterata$ (Cnidaria)?

  • A
    All are marine
  • B
    Presence of tentacles around the mouth
  • C
    Polyp form
  • D
    Gastrovascular cavity

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This organism possesses an organized endoskeleton made of calcium carbonate.

Which of the following is a characteristic feature of the phylum $Coelenterata$ (Cnidaria)?

Which of the following coral reefs is horse shoe shaped reef that encircles a lagoon but not an island?

In jellyfish,the gastrovascular cavity opens through which of the following?

It is a common cavity that performs both digestive and circulatory functions.

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