Mollusca - Wikipedia
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks [a] (/ ˈ m ɒ l ə s k s /). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. [5]
Mollusk | Definition, Characteristics, Shell, Classification, & Facts ...
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. Along with the insects and vertebrates, it is one of the most diverse groups in the animal kingdom, with …
14.4: Phylum Mollusca - Biology LibreTexts
2022年7月31日 · Phylum Mollusca is a very diverse (85,000 species) group of mostly marine species. Mollusks have a dramatic variety of form, ranging from large predatory squids and octopus, some of which show a high degree of intelligence, to grazing forms with elaborately sculpted and colored shells.
Phylum Mollusca - Characteristics, Classification and Examples
Mollusca. The animals belonging to the phylum Mollusca have soft-bodies, triploblastic and bilaterally symmetrical and coelomate. The study of Mollusca is called Malacology. They are sluggish invertebrates, with a thin fleshy envelope or mantle covering the visceral organs.
Mollusk Facts: Habitat, Behavior, Diet - ThoughtCo
2019年12月13日 · Common Name: Mollusks or molluscs. Basic Animal Group: Invertebrate. Size: Microscopic to 45 feet in length. Weight: Up to 1,650 pounds. Lifespan: Hours to centuries—the oldest is known to have lived over 500 years. Diet: Mostly herbivore, except for …
Mollusks Portal | Britannica
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.
MolluscaBase
MolluscaBase is a taxonomically oriented database that aims to provide an authoritative, permanently updated account of all molluscan species – marine, freshwater, and terrestrial, extant and fossil, and across all classes.
Phylum Mollusca | manoa.hawaii.edu/ExploringOurFluidEarth
The phylum Mollusca is the second-largest animal phylum, with over 100,000 species. The molluscs include many familiar animals, including clams, snails, slugs, and squid, as well as some less familiar animals, like tusk shells and chitons (Fig. 3.51 A).
List of mollusks | Gastropods, Bivalves, Cephalopods | Britannica
Mollusks are soft-bodied invertebrates of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. Along with the insects and vertebrates, mollusks are one of the most diverse groups in …
15.4: Mollusks and Annelids - Biology LibreTexts
2021年9月23日 · The phylum Mollusca is a large, mainly marine group of invertebrates. Mollusks show a variety of morphologies. Many mollusks secrete a calcareous shell for protection, but in other species, the shell is reduced or absent. Mollusks are protostomes.