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bivalve 音标拼音: [b'ɑɪv,ælv]

n. 双壳贝

双壳贝

WordNet (r) 3.0 (2006) (WordNet)

bivalve
adj 1: used of mollusks having two shells (as clams etc.) [synonym:
{bivalve}, {bivalved}] [ant: {univalve}]
n 1: marine or freshwater mollusks having a soft body with
platelike gills enclosed within two shells hinged together
[synonym: {bivalve}, {pelecypod}, {lamellibranch}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Bivalve \Bi"valve\, n. [F. bivalve; bi- (L. bis) valve valve.]
1. (Zool.) 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. The shell is closed by the contraction of
two transverse muscles attached to the inner surface, as
in the clam, -- or by one, as in the oyster. See Mollusca.
[1913 Webster]

2. (Bot.) A pericarp in which the seed case opens or splits
into two parts or valves.
[1913 Webster]

Bivalve \Bi"valve\, a. [Pref. bi- valve.] (Zool. & Bot.)
Having two shells or valves which open and shut, as the
oyster and certain seed vessels.
[1913 Webster]

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Bivalvia - Wikipedia
The shell of a bivalve is composed of calcium carbonate, and consists of two, usually similar, parts called valves These valves are for feeding and for disposal of waste
Bivalves - Types, Examples, Characteristics, Anatomy, Diet, Habitat
Bivalves are a group of freshwater and marine mollusks with bilaterally symmetric and laterally compressed bodies encased in a characteristic two-part shell They belong to the class Bivalvia, a term coined by Linnaeus (1758) from two Latin words, bis (two) and valvae (leaves of a door)
Bivalve | Definition, Characteristics, Species, Classification, Facts . . .
Bivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves
What is a bivalve mollusk? - NOAAs National Ocean Service
What is a bivalve mollusk? Bivalve mollusks (e g , clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate
Bivalve Examples: The Complete List - Flora Fauna Fun
Whether you walk a tidal flat or peer into a clear stream, bivalves can tell you a lot about water quality, habitat type, and regional biodiversity There are 20 Bivalve Examples, ranging from Asian clam to Zebra mussel
What Are Bivalved Animals and How Do They Live?
Bivalves are classified within the phylum Mollusca, but they are distinguished by the lack of a defined head and the rasping tongue-like organ called a radula Their protective exoskeleton is composed of two lateral valves, typically made of calcium carbonate, which are joined along the dorsal edge by an elastic hinge ligament
Bivalve Mollusks - Characteristics, Habitat, and Examples
Explore the world of bivalve mollusks, including mussels, oysters, cockles, and clams Discover their unique characteristics, diverse habitats, and examples of popular species
BIVALVE Definition Meaning - Merriam-Webster
The meaning of BIVALVE is being or having a shell composed of two valves How to use bivalve in a sentence
Bivalvia | INFORMATION | Animal Diversity Web - ADW
Also known as pelecypods, the approximately 15,000 species of this taxon are found in marine and freshwater habitats throughout the world A bivalve is characterized by possessing two shells secreted by a mantle that extends in a sheet on either side of the body
What are some unique facts about a bivalve? - The Institute for . . .
Bivalves are a class of marine and freshwater mollusks characterized by having a shell composed of two hinged parts (valves) From the sandy beaches we stroll to the deepest ocean trenches, these creatures have adapted to an astonishing array of environments

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