Phylum Mollusca

Front

What does the term 'Mollusca' mean?

Back

The term 'Mollusca' means 'soft body.'

Front

What are the three main classes of Phylum Mollusca?

Back

The three main classes are Bivalvia, Gastropoda, and Cephalopoda.

Front

Which class of Mollusca includes snails and slugs?

Back

The class Gastropoda includes snails and slugs.

Front

What is a radula and which class of Mollusca possesses it?

Back

A radula is a tongue-like organ with tiny teeth used for feeding, found in the class Gastropoda.

Front

What are the primary functions of gills in bivalves?

Back

The primary functions of gills in bivalves are respiration and filter feeding.

Front

Which class of Mollusca includes clams and oysters?

Back

The class Bivalvia includes clams and oysters.

Front

What is the main characteristic of Cephalopoda?

Back

Cephalopoda are characterized by their well-developed nervous system and ability to move quickly through jet propulsion.

Front

How do cephalopods differ from bivalves in terms of movement?

Back

Cephalopods can move quickly using jet propulsion, while bivalves are mostly sedentary and use a foot for limited movement.

Front

What is the significance of the shell in Gastropoda?

Back

The shell in Gastropoda provides protection and support, although some species, like slugs, have reduced or no shells.

Front

What type of symmetry do most mollusks exhibit?

Back

Most mollusks exhibit bilateral symmetry.