Molluscs (also know as mollusks) are soft-bodied, bilaterally symmetrical, segmented, coelomate animals; usually shelled having a mantle, ventral foot, anterior head, and a dorsal visceral mass.
The Mollusca (mollusks) are a large phylum of animals that includes the snails, slugs, clams, squids, and octopi, among others. Most are marine, many are freshwater, and some snails and slugs are terrestrial. The phylum name refers to their soft, pulpy bodies ( mollis means “soft”).
Beside this, What is the meaning of Mollusca?
: a large phylum of invertebrate animals (as snails, clams, and mussels) that have a soft unsegmented body lacking segmented appendages and commonly protected by a calcareous shell.
Likewise, What are the 5 main classes of Mollusca?
– class Aplacophora.
– clams, mussels, oysters, and scallops (class Bivalvia)
– octopi, squid, cuttlefish, and nautili (class Cephalopoda)
– snails and slugs (class Gastropoda)
– class Monoplacophora.
– class Polyplacophora.
– class Scaphopoda.
– extinct mollusks.
Also, What are five characteristics of phylum Mollusca?
– They are mostly found in marine and freshwater. …
– They exhibit organ system level of organization.
– Their body has a cavity.
– The body is divided into head, visceral mass, muscular foot and mantle.
– The head comprises of tentacles and compound eyes.
– The body is covered by a calcareous shell.
What are the major classes of Mollusca?
The Phylum Mollusca consist of 8 classes: 1) the Monoplacophora discovered in 1977; 2) the worm-like Aplacophora or solenogasters of the deep sea; 3) the also worm-like Caudofoveata; 4) the Polyplacophora, or chitons; 5) the Pelecypoda or bivalves; 6) the Gastropoda or snails; 7) the Scaphopoda, or tusk shells; and 8) …
17 Related Question Answers Found
How many classes of Mollusca are there?
seven classes
What are 3 traits that all mollusks have?
– Unsegmented soft body with bilateral symmetry.
– Presence of an internal or external shell.
– A toothed tongue (made mostly of chitin) called the radula.
– A mantle which is a fold in the body wall that lines the shell.
– Muscular foot (and/or tentacles in some).
What do all mollusks have in common?
Molluscs are a clade of organisms that all have soft bodies which typically have a “head” and a “foot” region. Often their bodies are covered by a hard exoskeleton, as in the shells of snails and clams or the plates of chitons.
What characteristics do mollusks have?
Molluscs (also know as mollusks) are soft-bodied, bilaterally symmetrical, segmented, coelomate animals; usually shelled having a mantle, ventral foot, anterior head, and a dorsal visceral mass.
Why are they called Mollusca?
Mollusca, meaning “soft-bodied,” is one of the largest phylums in the animal kingdom. The word mollusc (or mollusk) derives from the Latin word “mollis,” which means “soft.” There are an estimated 200,000 species of mollusk worldwide accounting for nearly a quarter of all marine life.
What does Mollusca mean?
: a large phylum of invertebrate animals (as snails, clams, and mussels) that have a soft unsegmented body lacking segmented appendages and commonly protected by a calcareous shell.
What is Mollusca in biology?
The Mollusca (mollusks) are a large phylum of animals that includes the snails, slugs, clams, squids, and octopi, among others. Most are marine, many are freshwater, and some snails and slugs are terrestrial. The phylum name refers to their soft, pulpy bodies ( mollis means “soft”).
What is the main characteristic that all Mollusca have in common?
Molluscs are a clade of organisms that all have soft bodies which typically have a “head” and a “foot” region. Often their bodies are covered by a hard exoskeleton, as in the shells of snails and clams or the plates of chitons.
How many classes of molluscs are there?
ten classes
What is the other name of Mollusca?
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks (/ˈmɒləsk/).
What are the four characteristics of mollusks?
Molluscs (also know as mollusks) are soft-bodied, bilaterally symmetrical, segmented, coelomate animals; usually shelled having a mantle, ventral foot, anterior head, and a dorsal visceral mass.
What makes a mollusk a mollusk?
Molluscs are a clade of organisms that all have soft bodies which typically have a “head” and a “foot” region. Often their bodies are covered by a hard exoskeleton, as in the shells of snails and clams or the plates of chitons.
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