statocysts — n. organ which serves to maintain equilibrium in certain invertebrates (Zoology) … English contemporary dictionary
external statocysts — (ARTHROPODA: Insecta) Special hair structures for the retention of the air supply that are adapted to underwater life … Dictionary of invertebrate zoology
mechanoreception — See mechanoreceptor. * * * Ability to detect and respond to mechanical stimuli in one s environment. A slight deformation of a mechanoreceptive neuron causes an electric charge at its surface, activating a response. Mechanoreceptors in pain spots … Universalium
cnidarian — /nuy dair ee euhn/, n. 1. any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria, characterized by the specialized stinging structures in the tentacles surrounding the mouth; a… … Universalium
Cnidaria — Temporal range: 580–0 Ma … Wikipedia
Cephalopod — Cephalopods Temporal range: Devonian – Recent[1] (Stem groups from Cambrian)[2] … Wikipedia
Ctenophore — Taxobox name = Comb jellies image caption = Ctenophorae from Ernst Haeckel s Kunstformen der Natur , 1904 domain = Eukaryota regnum = Animalia phylum = Ctenophora phylum authority = Eschscholtz, 1829 subdivision ranks = Classes subdivision =… … Wikipedia
crustacean — /kru stay sheuhn/, n. 1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice. adj. 2. belonging or pertaining to the… … Universalium
Arthropod — Temporal range: 540–0 Ma … Wikipedia
Octopus — This article is about the order of cephalopod. For other uses, see Octopus (disambiguation). Octopus … Wikipedia
