Alternative name for members of the phylum Cnidaria – aquatic animals which include the jellyfish
, sea anemone
, and hydroids. Characterized by a digestive cavity that forms the main body, they may have been the first animal group to reach the tissue level of organization. Coelenterates are radially symmetrical, jelly-like, and have a nerve net and one body opening. Reproduction is sexual and asexual; regeneration also occurs. There are c.
/ siˈlentəˌrāt; -rət/
an aquatic invertebrate animal of the phylum Cnidaria (formerly Coelenterata), which includes jellyfishes, corals, and sea anemones. They are distinguished by having a tube- or cup-shaped body. Also called cnidarian.
An invertebrate animal with a radially symmetrical body, a body wall consisting of two cell layers, and a body cavity (gastrovascular cavity
) that communicates with the outside via a single opening, the mouth. Coelenterates include hydras, jellyfish, sea anemones, and corals (see Cnidaria
) and also the comb jellies (see Ctenophora
The name formerly given to a phylum comprising both Cnidaria
. Today, when these two groups are universally separated in different phyla, the term ‘Coelenterata’ is sometimes used as a synonym for Cnidaria alone.
Name formerly applied to a phylum comprising both Cnidaria
and Ctenophora. Today, when these two groups are universally separated in different phyla, the term ‘Coelenterata’ is sometimes used as a synonym for Cnidaria alone.