The first thing that mig… amoebocytes: Definition. It also forms a mantle Bivalve definition, any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills. accessed 26 February 2009. hemolymph. chromatophore. Bivalvia , in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. Where does the radula lie and what supports it? Bivalve -ed: applied to mouth parts consisting of two parts or valves united to form a tube. Information and translations of bivalve in the most comprehensive dictionary definitions resource on the web. 'Bi' means two and 'valve' is really 'valvae', which means 'leaves of a door'. Definition of Phylum Mollusca 2. Copyright © 2011. Bivalve (noun) a mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth. All bivalves are mollusks. valve. sponge cells that carry food particles to epidermal cells: Term. (bī′vălv′) n. Any of numerous freshwater and marine mollusks of the class Bivalvia, having a shell consisting of two hinged valves connected by a ligament, and including the clams, mussels, oysters, and scallops. Benthic bivalves are important links between primary production and consumers, and are essential intermediates in the flow of energy through estuarine systems. Master these essential literary terms and you’ll be talking like your English teacher in no time. © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins An internal organ called the mantle secretes calcium carbonate so that as the inner invertebrate grows, the outer shell provides a roomier home. ... Additional Biology Flashcards . bivalve, aquatic mollusk of the class Pelecypoda ("hatchet-foot") or Bivalvia, with a laterally compressed body and a shell consisting of two valves, or movable pieces, hinged by All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. 2000. having two shells, usually united by a hinge. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. The name bivalvecomes from Latin as most biological classifications do. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition Siphons in molluscs are tube-like structures in which water flows (or more rarely in which air flows). 2. This is my vocab (assignment due Mon) for Adv Biology--the Mollusks part. They belong to the phylum Mollusca, which are more commonly called 'mollusks'. But you may not have realized that these creatures are also called bivalves. WDFW - Shellfish: Geoduck clam. 9 No. Also: pelecypod, lamellibranch. Not Applicable. ... What is a bi-valve? any marine or freshwater mollusc of the class, having or consisting of two valves or similar parts. Definition. Created. bivalve (bī′vălv′) n. Any of numerous freshwater and marine mollusks of the class Bivalvia, having a shell consisting of two hinged valves connected by a ligament, and including the clams, mussels, oysters, and scallops. ^ M. Alan Kazlev. Lease/bay characteristics accounted for 60% of the deviance of bivalve condition index. The bivalve foot, unlike that of gastropods, does not have a flat creeping sole but is bladelike (laterally compressed) and pointed for digging. A principal limitation to assessing genetic improvement and domestication is a lack of basic, detailed, mariculture statistics. Can you identify the antonym of “protagonist,” or the opposite of a hero or heroine? The science of bivalve genetics dates back, primarily, to the mid-1970s and is surprisingly robust, given the small size of the bivalve biology community. hemocoel. Habit and Habitat of Phylum Mollusca 3. Learn more. Any of various mollusks of the class Bivalvia, having a shell consisting of two halves hinged together. bivalve: The mantle and musculature The mantle lobes secrete the shell valves; the mantle crest secretes the ligament and hinge teeth. Already discussed in the biology of Sepia at the margins, although increases in thickness take place everywhere a #. Foot for locomotion tube through which water exits the mantle of mollusks and brachiopods secretes the shell species... The Ostracoda have the body enclosed in a bivalve is an animal that has an open system! And posterior pedal retractors group have no head and they lack some usual molluscan organs like the radula the... 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