Question

what is cnidaria ?The one will anwer will be brainlest

Answer 1

Hello friend
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Cnidaria is one of the more primitive animal phyla.

It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras.
 
Most cnidarians are marine, although a few, such as the well-known hydra, are freshwater species.

  Cnidaria is a phylum containing over 9,000 species found only in aquatic and mostly marine environments.
    
Sea anemones and corals have the polyp form, while jellyfish are typical medusae.
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Swapnil756   Apprentice Moderator

Answer 2

Cnidaria is a type of invertebrate phylum. In cnidarians, a two-layered body wall encloses a single cavity in with digestion takes place.The cavity open by a mouth at one and only. There are tentacles to catch food organisms.The cnidarians are found in water (mostly in sea, very few and fresh water). Corals develop hard skeleton made up of calcium carbonate from their secretions (but they are not bones).Eg:- Sea anemone, jellyfish, etc.

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