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.
Mollusca - Wikipedia
Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater and even terrestrial species.
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 …
Phylum Mollusca - Characteristics, Classification and Examples
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.
28.3F: Classification of Phylum Mollusca - Biology LibreTexts
2023年10月31日 · Phylum Mollusca is a very diverse (85,000 species ) group of mostly marine species, with a dramatic variety of form. This phylum can be segregated into seven classes: Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, and …
Phylum Mollusca - Classification, Definition, Characteristics, …
2024年10月1日 · Phylum Mollusca, ranking as the second-largest phylum in the animal kingdom after Arthropoda, is distinguished by its members known as molluscs or mollusks. This phylum is characterized by approximately 76,000 extant species, with an estimated additional 60,000 to 100,000 fossil species.
28.3E: Phylum Mollusca - Biology LibreTexts
2023年10月31日 · Phylum Mollusca. Phylum Mollusca is the predominant phylum in marine environments. It is estimated that 23 percent of all known marine species are mollusks; there are around 85,000 described species, making them the second most diverse phylum of animals.
Classification and economic importance of mollusks | Britannica
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 by the mantle, a soft covering formed from the body wall. …
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 …
Mollusk - Definition, List, Examples, Characteristics, and Image
2024年4月30日 · Mollusks or Molluscs are a group of soft-bodied invertebrates distributed across marine, freshwater, and terrestrial habitats. They belong to the phylum Mollusca, the second largest after Arthropoda , with around 76,000 extant species worldwide, accounting for around 23% of all marine species.