Phylum Mollusca - Classification Review

Front

What are the three classes that contain most mollusk species?

Back

Gastropoda, Bivalvia, Cephalopoda

Front

What structure do tusk shells use for feeding?

Back

Captacula

Front

Which mollusk class includes land species?

Back

Gastropoda

Front

How do bivalves primarily obtain their food?

Back

Through filter feeding.

Front

Approximately how many species are in the class Cephalopoda?

Back

800

Front

What is the main characteristic of the class Gastropoda?

Back

Gastropods are characterized by a single, usually spiraled shell and a distinct head with tentacles.

Front

What is the primary feeding method of bivalves?

Back

Filter feeding, where they siphon water to extract food particles.

Front

Name a common example of a cephalopod.

Back

Octopus.

Front

What is the significance of chromatophores in cephalopods?

Back

Chromatophores are pigment cells that allow cephalopods to change color for communication and camouflage.

Front

What is the main difference between gastropods and bivalves?

Back

Gastropods have a single shell and a distinct head, while bivalves have two shells and lack a distinct head.