What is the job of adductor muscles in clams?

Close the valves

Name three members of class Cephalopoda.

Nautiluses, cuttlefish, squids, octopi (3)

How do cephalopods locate their prey?

Sight

The similarity between the eyes of vertebrates and cephalopods is an example of ___________.

Convergent evolution

Tooth shells belong to which class of mollusk?

Scaphopoda

What is the common name for members of the class polyplacophora?

Chitons

The diversity of body forms and life- styles in the phylum Mollusca is an excellent example of __________.

Adaptive radiation

In mollusks, what contains organs for digestion, circulation, reproduction, and excretion.

Visceral mass

What is the name of the male tentacle modified for spermatophore transfer?

hectocotylus

What supports a mollusk’s body

Hydrostatic or hydraulic skeleton

How many described species of mollusks are there?

100,000

Where does gas exchange occur in bivalves?

The gills

What are the two main regions of the mollusk body?

Aquatic gastropods’ excretory product is mainly __________.

Ammonia

head-foot and the visceral mass

How does the mantle protect a mollusk?

secretes the shell

What is the rough structure in the mouth of most mollusks?

Radula

What sets nautiluses apart from other cephalopods?

Their shell

Where is the mantle cavity located?

Between the mantle and the foot

Name two organisms in the class Gastropoda.

Slugs, snails, limpets (2)

How many degrees are turned during torsion?

180

The mucous mass in the stomach of a gastropod is called the ___________.

Protostyle

Which mollusk class contains the most described species?

Gastropoda

The circulatory system of most mollusks could be described as __________.

open

Name 2 members of class Bivalvia.

Clams, oysters, mussels, scallops, etc…

What is the name for the oldest part of a bivalve shell?

umbo