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 ?
Most recently, Sphenothallus has been assigned to the large group of animals called Cnidaria, which includes corals, jellyfish, hydra, and a host of other primitive organisms, most of which live in the sea.
Los artropoda fueron los mas numerosos (n = 22), luego los rotiferos con ocho especies, y con una especie cada una, los filas Rhizopoda, Cnidaria, Nematoda, Tardigrada y Annelida.
Larvae of members of the phylum Cnidaria are believed to be the cause of this dermatitis.
Craspedacusta sowerbii Lankester (Cnidaria: Hydrozoa) is the only species of freshwater cnidarian in North America exhibiting a medusa stage in it's life cycle.
Phylum Cnidaria Class Anthozoa Order Actiniaria Family Boloceroididae Bunodeopsis sp.
-- Unidentified polychaeta 0.27 Phylum Platyhelminthes 0.80 Phylum Mollusca 1.81 Class Bivalvia 1.60 Class Gastropoda 0.27 Phylum Brachiopoda 0.80 Phylum Cnidaria * Class Scyphozoa - Aurelia ap.
Nucleotide sequencing of highly repetitive DNA from seven species in the coral genus Acropora (Cnidaria: Scleractinia) implies a division contrary to morphological criteria.
Cnidaria, for instance, control population growth of their algal symbionts by limiting the supply of nutrients they deliver to them; in some circumstances they will expel or lyse the algae.
A new species of Hydra (Cnidaria: Hydrozoa) from North America with comments on species clusters within the genus.
The mitochondrial genome of the sea anemone Metridium senile (Cnidaria): Introns, a paucity of trna genes, and a near-standard genetic code.