Description of a mollusk
WebTypes of Mollusks. There are approximately 160,000 living species and probably 70,000 extinct species of mollusks. They are typically divided into ten classes, of which two are extinct. The major classes of living mollusks include gastropods, bivalves, and cephalopods ( Figure below ). WebMar 22, 2024 · 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. Along with the insects and vertebrates, it is one of the … octopus, plural octopuses or octopi, in general, any eight-armed cephalopod … chiton, any of numerous flattened, bilaterally symmetrical marine mollusks, … A mollusk is a kind of animal with a soft body. Most mollusks have a hard shell …
Description of a mollusk
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WebAug 31, 2024 · The name “Mollusca” symbolizes a soft body because the earliest descriptions of mollusk originated from observations of unshelled cuttlefish. Mollusk are mainly a marine group of animals; … WebFeb 24, 2024 · slug, any mollusk of the class Gastropoda in which the shell is reduced to an internal plate or a series of granules or is completely …
WebEvolution of molluscs. The evolution of the molluscs is the way in which the Mollusca, one of the largest groups of invertebrate animals, evolved. This phylum includes gastropods, … WebHave simple brains, leeches, composed of many segments, may be aquatic or terrestrial, bilateral symmetry Arthropods versus mollusks Drag each description to its proper category some labels may be used more than once. Arthropods- The most diverse animal phylum, molt, crab, exoskeleton contains chitin, some members are cephalized.
WebDec 11, 2015 · The radula is a specialized muscular feeding organ that contains teeth made of a carbohydrate (chitin) substance. It is located in front of the mouth in the head region of all mollusk classes except Bivalvia. This makes sense since bivalves are filter feeders that lack a distinct head region. Some mollusks use the radula to scrape food, such as ... WebDescription 1 mollusk drawing (7 x 11 cm.) Artist Burkhardt, Jacques Artwork Date 1852-03-14 Genre drawings Taxonomic Classification Animalia. 2. Mollusk (Charleston, South Carolina, 14 March 1852) Description 1 mollusk drawing (8 x 12 cm.) Artist Burkhardt, Jacques Artwork Date 1852-03-14 Genre drawings
WebDec 11, 2015 · Mollusks are the first animals to have evolved organ systems for respiration and circulation. All mollusks except those in the class Cephalopoda have an open circulatory system. The excretory system of mollusks is made up of tubular organs called nephridia that filter waste from internal body fluids. Review
WebJul 12, 2024 · Description . Examples of gastropods include whelks, conchs, periwinkles, abalone, limpets, and nudibranchs. Many gastropods such as snails and limpets have one shell. Sea slugs, like nudibranchs … black and decker tools canadaWebnoun. mol· lusk ˈmä-ləsk. variants or mollusc. : any of a large phylum (Mollusca) of invertebrate animals (such as snails, clams, or squids) with a soft unsegmented … black and decker tools price listWebMay 6, 2024 · Symptoms. Molluscum contagiosum signs and symptoms include: Raised, round, skin-colored bumps. Small bumps — typically under about 1/4 inch (smaller than 6 millimeters) in diameter. Bumps with a … black and decker tools websiteWebA mollusk is a kind of animal with a soft body. Most mollusks have a hard shell that protects the body. There are more than 100,000 species, or types, of mollusk. Octopuses, oysters, snails, and squid are just a few … black and decker towson mdWebDec 13, 2024 · Nautiluses are primarily scavengers of dead crustaceans, fish, and other organisms, even other nautiluses. However, they do prey on (living) hermit crabs and dig in the soft sediments of the sea floor for … black and decker tower fan heaterWebchiton, any of numerous flattened, bilaterally symmetrical marine mollusks, worldwide in distribution but most abundant in warm regions. The approximately 600 species are usually placed in the class Placophora, … dave and eva abc gameWebMar 21, 2024 · Updated on March 21, 2024. The mantle is an important part of the body of a mollusk. It forms the outer wall of the mollusk's body. The mantle encloses the mollusk's visceral mass, which is its internal … black and decker tool table