What are the 3 classes of mollusks?

The three major groups of mollusks are gastropods, bivalves, and cephalopods (SEF ul o pods). The largest group is the gastropods. These are mollusks like snails and slugs that have just one shell or no shell at all. Gastropods creep along on their broad foot.

What are the three most common and diverse classes of molluscs?

The major classes of living mollusks include gastropods, bivalves, and cephalopods (Figure below).

What are the four most common and diverse classes of molluscs provide examples of each?

The four major groups of mollusks (phyla Mollusca) are: 1) chitons; 2) gastropods, including snails, slugs (mostly marine, but some freshwater), and nudibranches.

How are the classes of Mollusca different?

Mollusks can be segregated into seven classes: Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, and Scaphopoda. Class Aplacophora includes worm-like animals with no shell and a rudimentary body structure. Members of class Monoplacophora have a single shell that encloses the body.

How are the different types of mollusks different?

bivalves -2 shells that are hinged together (clams, muscles, scallops, oysters -soft body surrounded by mantle (mantle creates the shell) -filter feeders or use straw-like organ to collect food/water cephalopods -tentacles come out of head -large head with brain -octopus/squid -move using jet propulsion -ink for getting away from predators

What kind of mollusks pull their shells closed?

Clams, Oysters, and Scallops are bivalve mollusks and are a familiar food source. These three animals pull their shells closed by contracting powerful muscles near the hinge. The open these shells they have to relax their muscles. These animals are well adapted for living in water.

Are there any vermiform mollusks without a shell?

The Neomenia carinata is another vermiform mollusks without a shell, but belongs rather to the Solenogastres family. This mollusk type can been found in a depth range of between 10 and 565 meters and lives freely in the Atlantic Ocean, on the coasts of Portugal.

What are the characteristics of an invertebrate mollusk?

Mollusks are a very diverse group of invertebrate animals, and finding common characteristics among all of them can be slightly tricky. Therefore, here we present some of the most common characteristics among mollusks, but bear in mind, there are some exceptions: Mantle: refers to the dorsal surface of the body that can secrete protection.