Bivalves biology definition
WebBivalve sperm have two flagellae. Most eggs are small, and synchronized spawning results in the discharge of both types of gametes into the sea for external fertilization. … Webbivalve: [adjective] being or having a shell composed of two valves.
Bivalves biology definition
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Webbivalve (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 … WebJan 26, 2001 · A septibranch bivalve has a septum across its mantle cavity, which functions to pump in food. Thus, Bivalvia is the only molluscan class characterized by the …
Webbivalve: 1 n marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together Synonyms: lamellibranch , pelecypod Types: show 26 … Webbivalve Bedeutung, Definition bivalve: 1. a type of mollusc, such as an oyster, that has its body inside two connected shells: 2. having….
WebBivalves usually live on or in sandy or muddy bottoms. True clams, in the strict sense, are bivalves with equal shells closed by two adductor muscles situated at opposite ends of the shell, and with a powerful, muscular, … WebBivalve mollusks (e.g., clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate. A roughfile clam from the Flower Garden Bank National …
Web2 days ago · Byssal, or byssus, threads are strong, silky fibers that are made from proteins that are used by mussels and other bivalves to attach to rocks, pilings or other substrates. These animals produce their byssal …
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. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. The class includes the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a numb… circlip ring pliersWebbivalve: 1 n marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together Synonyms: lamellibranch , pelecypod Types: show 26 types... hide 26 types... clam burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness cockle common edible, burrowing European bivalve ... diamond buyers international bbbWeb1. Definition of Molluscs: Phylum Mollusca is a group of invertebrates which has fascinated man from the dawn of civilization. It is a major group in the animal kingdom as regards the number which occupies next to arthropods. The members of this group have adapted either on land or in water. ADVERTISEMENTS: diamond buyers huntington beach caWebbivalve définition, signification, ce qu'est bivalve: 1. a type of mollusc, such as an oyster, that has its body inside two connected shells: 2. having…. En savoir plus. diamond buyers inc. houstonWebbivalve ý nghĩa, định nghĩa, bivalve là gì: 1. a type of mollusc, such as an oyster, that has its body inside two connected shells: 2. having…. Tìm hiểu thêm. circlips for ceiling lightsWebThe siphon is part of the mantle of the mollusc, and the water flow is directed to (or from) the mantle cavity . A single siphon occurs in some gastropods. In those bivalves which have siphons, the siphons are … diamond buyers in pittsburgh paWebbivalve noun [ C ] biology specialized uk / ˈbaɪ.vælv / us / ˈbaɪ.vælv / a type of mollusc, such as an oyster, that has its body inside two connected shells: They fish for clams, oysters, and other bivalves. Isabelle Rozenbaum & Frederic Cirou/PhotoAlto Agency RF Collections/GettyImages 例文をもっと見る circlips for hole