Inner layer of a mollusk's shell; next to the mantle; involved in pearl formation

Area of a mollusk's body that houses feeding, sensory, and locomotive organs

What does the mantle of pulmonate land snails and slugs function as?

Space between mantle & shell, houses respiratory organs, stores wastes

What is the modified cephalopod foot; used in jet propulsion?

Contains heart, vessels, and sinuses; blood is not confined to vessels

Contains heart, vessels, and capillaries; blood is confined to vessels

What type of circulatory system is found in cephalopods?

A single cephalopod heart that pumps blood throughout the cephalopod's body

Two smaller hearts that are associated with each cephalopod gill; pumps blood across the gills

Mollusks that are flattened dorsoventrally with 8 movable plates; cling to rocks with a broad, flat foot; can roll up like an armadillo for protection

What mineral is used to strengthen and reinforce a chiton's radula?

What mineral is used to make a mollusk's shell?

Which of the following makes mollusk blood blue?

Mollusks that typically have a one piece shell or no shell; can be marine, freshwater, or terrestrial; typically eat by grazing; includes snails, slugs, abalone, limpets

Mollusks that have two-piece shells; filter feeds that lack a head & radula; some can form pearls; includes oysters, clams, scallops

Mollusks that are all active predators with very large brains; most intelligent of all invertebrates; includes octopus, squid, cuttlefish, nautilus

Ingested by some marine gastropods (like sea slugs), then moved to the outside of the body and used for defense

Form when sand, parasite, or other foreign object becomes lodged between the shell and mantle of certain bivalves; can be used to make jewelry

Mantle cavity, visceral mass, & shell moves 180 degrees relative to head foot region; mouth and anus are both found at the anterior end of the gastropod

Spiral winding of a gastropod around an axis giving the mollusk's shell a coiled appearance

Specialized skin cells that contain pigment and are surrounded by muscles; muscles control color & patterns by controlling pigment concentrations

A structure within a cephalopod's body that releases melanin (dark pigment) if the cephalopod is threatened

Animals that learn by observing other animals and will repeat behaviors that are rewarded

Eye with cornea, lens, & retina; cephalopods and vertebrates have this type of eye

What are possible functions of a mollusk's tentacles?

Mollusk's tongue-like structure that is covered with backwards-pointing teeth, files small particles of food and moves them to the digestive tract