ఆల్చిప్ప: కూర్పుల మధ్య తేడాలు
చి యంత్రము కలుపుతున్నది: id:Bivalvia |
Rajasekhar1961 (చర్చ | రచనలు) దిద్దుబాటు సారాంశం లేదు |
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| పంక్తి 20: | పంక్తి 20: | ||
'''ఆల్చిప్పలు''' [[మొలస్కా]] జాతికి చెందిన జంతువులు. |
'''ఆల్చిప్పలు''' [[మొలస్కా]] జాతికి చెందిన జంతువులు. |
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'''Bivalves''' are [[mollusc]]s belonging to the class '''Bivalvia'''. They have two-part [[animal shell|shell]]s, and typically both valves are [[symmetry|symmetrical]] along the hinge line. The class has 30,000 [[species]], including [[scallop]]s, [[clam]]s, [[oyster]]s and [[mussel]]s. Other names for the class include '''Bivalva''', '''Pelecypoda''', and '''Lamellibranchia'''. |
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Bivalves are exclusively aquatic; they include both marine and freshwater forms. However some, for instance the mussels, can survive out of water for short periods by closing their valves. |
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Bivalves are unique among the molluscs for lacking a [[radula]]; they feed by siphoning and filtering large particles from water. Some bivalves are [[Fauna (animals)#Epifauna|epifaunal]]: that is, they attach themselves to surfaces in the water, by means of a [[byssus]] or organic cementation. Others are [[Fauna (animals)#Infauna|infaunal]]: they bury themselves in sand or other sediments; these forms typically have a strong digging foot. Some bivalves, such as [[scallop]]s, can swim. |
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[[వర్గం:మొలస్కా]] |
[[వర్గం:మొలస్కా]] |
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08:58, 17 డిసెంబరు 2008 నాటి కూర్పు
| ఆల్చిప్పలు కాల విస్తరణ: కాంబ్రియన్ - Recent
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| "Acephala" from Ernst Haeckel's Kunstformen der Natur, 1904 | |
| శాస్త్రీయ వర్గీకరణ | |
| Kingdom: | |
| Phylum: | |
| Class: | Bivalvia |
| ఉపతరగతులు | |
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Anomalosdesmata | |
ఆల్చిప్పలు మొలస్కా జాతికి చెందిన జంతువులు.
Bivalves are molluscs belonging to the class Bivalvia. They have two-part shells, and typically both valves are symmetrical along the hinge line. The class has 30,000 species, including scallops, clams, oysters and mussels. Other names for the class include Bivalva, Pelecypoda, and Lamellibranchia.
Bivalves are exclusively aquatic; they include both marine and freshwater forms. However some, for instance the mussels, can survive out of water for short periods by closing their valves.
Bivalves are unique among the molluscs for lacking a radula; they feed by siphoning and filtering large particles from water. Some bivalves are epifaunal: that is, they attach themselves to surfaces in the water, by means of a byssus or organic cementation. Others are infaunal: they bury themselves in sand or other sediments; these forms typically have a strong digging foot. Some bivalves, such as scallops, can swim.