Shell

What is a bivale?

What is a bivale?
  1. What is a bivalve organism?
  2. What are the 4 types of bivalves?
  3. What are the characteristics of a bivalves?
  4. What is the bivalve called?
  5. Is a snail a bivalve?
  6. Is Crab a bivalve?
  7. Is a shrimp a mollusk?
  8. What are the 5 groups of bivalves?
  9. Is an oyster a bivalve?
  10. How do you identify bivalves?
  11. What are bivalves made of?
  12. Why are they called bivalves?
  13. Is an octopus a mollusk?
  14. What gastropod means?
  15. Is a snail a mollusk?

What is a bivalve organism?

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 are the 4 types of bivalves?

Bivalves include clams, scallops, oysters, and mussels. As their name implies, they have two parts of their shell, which can open and close.

What are the characteristics of a bivalves?

The bivalves are bilaterally symmetrical mollusks, enclosing the soft internal body. Common feeding characteristics of bivalves include filtering out particle food through an enlarged pair of gills known as ctenidia. Most bivalves are sedentary, but some use their foot to glide across substrate.

What is the bivalve called?

noun. Also called lamellibranch. Zoology. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills.

Is a snail a bivalve?

includes clams, snails, slugs, nudibranchs, squid, octopuses, tusk shells, chitons, and many others that are all generally called mollusksMollusk: ... A member of the phylum Mollusca; also spelled mollusc (most especially in the United Kingdom)..

Is Crab a bivalve?

bivalve shellfish such as clams, oysters, scallops, and mussels, other molluscan shellfish such as whelks and, the tomalley of lobster and crab.

Is a shrimp a mollusk?

Shrimp and crabs are not mollusks. They belong to the phylum Crustacea. Crustaceans are not true filter feeders like clams, mussels, oysters, and scallops in the phylum Mollusca, subphylum Bivalvia, and typically do not filter dinoflagellates for food.

What are the 5 groups of bivalves?

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.

Is an oyster a bivalve?

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. ... Many bivalve species play important roles in aquatic and marine ecosystems by filtering the water and serving as habitat and prey for a variety of sea life.

How do you identify bivalves?

The bivalve shell is composed of two valves ("bi-valves"). The valves are joined by a hinge composed of tiny "teeth" and usually also an elastic ligament. The number, size and shape of the teeth as well as the position of the ligament are important characters for the identification of bivalves.

What are bivalves made of?

The bivalve shell is made of calcium carbonate embedded in an organic matrix secreted by the mantle. The periostracum, the outermost organic layer, is secreted by the inner surface of the outer mantle fold at the mantle margin.

Why are they called bivalves?

Clams and their relatives (oysters, scallops, and mussels) are often called bivalves (or bivalved mollusks) because their shell is composed of two parts called valves. Bivalves have a long history.

Is an octopus a mollusk?

octopus, plural octopuses or octopi, in general, any eight-armed cephalopod (octopod) mollusk of the order Octopoda. The true octopuses are members of the genus Octopus, a large group of widely distributed shallow-water cephalopods.

What gastropod means?

Definition of gastropod

: any of a large class (Gastropoda) of mollusks (such as snails and slugs) usually with a univalve shell or none and a distinct head bearing sensory organs.

Is a snail a mollusk?

The Class Gastropoda (in Phylum Mollusca) includes the groups pertaining to snails and slugs. The majority of gastropods have a single, usually spirally, coiled shell into which the body can be withdrawn.

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