information about bivales
Answers
Answer:
They take in their food and oxygen, and let out wastes, using tube-like body parts called siphons. Bivalves like clams, oysters, scallops and mussels are commonly used throughout the world as a source of food for both humans and other animals.
Answer:
Bivalvia (/baɪˈvælviə/), 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. Bivalves as a group have no head and they lack some usual molluscan organs like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances.
Bivalvia
Temporal range: Early Cambrian - recent[1][2]
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"Acephala", from Ernst Haeckel's Kunstformen der Natur (1904)Scientific classificationKingdom:AnimaliaPhylum:MolluscaClass:Bivalvia
Linnaeus, 1758Subclasses
Heterodonta
Palaeoheterodonta
Protobranchia
Pteriomorphia
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Empty shell of the giant clam
(Tridacna gigas)