Mollusca Test Review

Front

What is a marine gastropod without a shell, also known as a sea slug?

Back

Nudibranch

Front

What is the membranous sheath of skin that extends from the visceral mass and protects the soft parts of a mollusk?

Back

Mantle

Front

What type of symmetry do most mollusks exhibit?

Back

Bilateral symmetry

Front

What is the rasping, tongue-like organ with backwards facing teeth that acts like a conveyor belt in mollusks?

Back

Radula

Front

How many hearts do most mollusks have?

Back

6

Front

What is the primary function of the mantle in mollusks?

Back

To protect the soft body and produce the shell (if present).

Front

What is the role of the radula in feeding for most mollusks?

Back

It scrapes food off surfaces and helps in the ingestion process.

Front

What are the main classes of mollusks?

Back

Gastropoda, Bivalvia, Cephalopoda, Polyplacophora, Scaphopoda.

Front

What is the function of ctenidia in mollusks?

Back

Ctenidia are gills used for respiration and feeding.

Front

What is the significance of bilateral symmetry in mollusks?

Back

It allows for streamlined movement and a more complex body structure.