Cnidaria

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Noun1.Cnidaria - hydrasCnidaria - 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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
However, they tend to attach themselves to the sea floor or to sponges or cnidarians, such as coral.
The swimming behavior of crustacean larvae (Amphibalanus amphitrite, Artemia franciscana), rotifers (Brachionus plicatilis), echinoderm larvae (Paracentrotus lividus), and the frequency of pulsations of the juvenile stage (ephyra) of cnidarians (Aurelia sp.) have proven to successfully detect toxicity of traditional and emerging contaminants, such as pharmaceuticals, nano-, and micromaterials (Morgana et al., 2016; Estevez-Calvar et al., 2017; Faimali et al., 2017; Gambardella et al., 2017).
The predominant invertebrate taxonomic group in the conservation lists was the cnidarians (63%), particularly corals, followed by arthropods (19%) and mollusks (18%).
Nitric oxide signaling pathways at neural level in invertebrates: functional implications in cnidarians. Brain Res.
gigantea, from preserved specimens of the Collection of Cnidarians of the Gulf of Mexico and Mexican Caribbean, of the Universidad Nacional Autonoma de Mexico (UNAM).
Tropical symbiotic cnidarians are characterized by the metabolic exchange of organic carbon and nutrients with their symbiotic dinoflagellate partners, allowing them to prosper in oligotrophic waters [1,2].
Savic, "Novel and highly potent antitumour natural products from cnidarians of marine origin," Natural Product Research, vol.
An example is a three-part page picturing the life cycles of three cnidarians (the group of invertebrates coral reefs belong to): the jelly, the anemone, and the coral life cycle.
Their topics include the history of coral disease research, the innate immune system in cnidarians, the physiology of skeletogenesis in scleractinian coral, aspergillosis of Caribbean Sea fan corals, skeletal growth anomalies in corals, cyanobacteria-associated colored-band diseases of the Atlantic and Caribbean, coral "bleaching" as a generalized stress response to environmental disturbance, biocontainment practices for coral disease research, and chemiluminescent methods for quantifying DNA abasic lesions in scleractinian coral tissues.
Coral reefs are complex ecosystems that provide microniches for enormous diversities of microorganisms (Ainsworth et al., 2010) associated with marine invertebrates such as sponges, cnidarians, and mollusks (Sfanos et al., 2005).