phylum Cnidaria


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Noun1.phylum Cnidaria - hydrasphylum Cnidaria - hydras; polyps; jellyfishes; sea anemones; corals
Metazoa, subkingdom Metazoa - multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system
cnidarian, coelenterate - radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms
polyp - one of two forms that coelenterates take (e.g. a hydra or coral): usually sedentary with a hollow cylindrical body usually with a ring of tentacles around the mouth; "in some species of coelenterate, polyps are a phase in the life cycle that alternates with a medusoid phase"
medusan, medusoid, medusa - one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentacles
class Scyphozoa, Scyphozoa - coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes
jellyfish - any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
class Hydrozoa, Hydrozoa - coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
Actinozoa, Anthozoa, class Actinozoa, class Anthozoa - a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed
phylum - (biology) the major taxonomic group of animals and plants; contains classes
References in periodicals archive ?
Species of the phylum Cnidaria exhibit a wide variety of life-cycle plasticity and dispersal capabilities (reviewed in Fautin, 2002).
This specimen from the Arctic is probably a new species of comb jelly, (Unlike true jellyfish, in the phylum Cnidaria, comb jellies don't have stinging cells.
Hydra are simple animals that, along with jellyfish, belong to the phylum cnidaria, which first emerged 600 million years ago.
38 37,62 0 0 Jania adherens 17 16,83 0 0 Polysiphonia pacifica 23 22,77 0 0 Phylum Cnidaria Pocilloporidae Pocillopora spp.
Larvae of members of the phylum Cnidaria are believed to be the cause of this dermatitis.
Phylum Cnidaria Class Anthozoa Order Actiniaria Family Boloceroididae Bunodeopsis sp.
Frequency Number (stomachs) %F (counts) Phylum Cnidaria Class Hydrozoa Family Sertulariidae Sertularia sp.
Lagoons USX Reach Taxa NPS1 NPS2 FWS1 Phylum Porifera Phylum Cnidaria Hydridae Hydra Phylum Platyhelminthes Turbellaria Phylum Nematoda Phylum Bryozoa Plumatella unidentified bryozoans Phylum Annelida Oligochaeta Lumbricidae Lumbriculidae Tubificidae Limnodrilus Limnodrilus cervix Limnodrilus hoffmeisteri Potamothrix vejdovskyi Quistadrilus multisetosus immature w/o capil.
Members of the phylum Cnidaria possess fibrillar and non-fibrillar collagenous proteins in their mesoglea.