2024年12月31日 · Mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. …

Mollusks are invertebrates, meaning that they do not have a backbone. They have a soft body that holds the heart, liver, digestive system, and other important organs. Most mollusks have a …

mollusk, or mollusc, Any of some 75,000 species of soft-bodied invertebrate animals (phylum Mollusca), many of which are wholly or partly enclosed in a calcium carbonate shell secreted …

Mollusk, also spelled mollusc, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

2024年12月31日 · Mollusk - Gastropods, Bivalves, Cephalopods: Mollusks are primarily of separate sexes, and the reproductive organs (gonads) are simple. While some reproduce by …

2024年11月30日 · Gastropod, any member of more than 65,000 animal species belonging to the class Gastropoda, the largest group in the phylum Mollusca. The class is made up of the …

mollusks The name mollusk comes from a Latin word meaning “soft.” On the outside, many mollusks appear anything but soft because they have hard shells. Inside, however, is a soft …

The large group of animals called mollusks live on land and in both freshwater and salt water. They constitute the phylum Mollusca, a major group of animals known to have as many as …

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 …

2024年12月14日 · Oyster, any member of the families Ostreidae (true oysters) or Aviculidae (pearl oysters), bivalve mollusks found in temperate and warm coastal waters of all oceans. …