Card Set Information
The phylum Mollusca featuring Polyplacophora, Gastropoda, Bivalvia and Cephalopoda
The means of locomotion for a mollusc, highly modified across Phyllys.
A dorsal membrane that secretes the shell.
A rough tongue that rasps food.
Chitons; Their shell consists of 7 or 8 flattened dorsal plates.
Snails, slugs, abalones, etc.; Well developed head, uses torsion to balance shells, only non aquatic mollusc.
Clams, mussels, etc.; 2 Shells hinged on the dorsal side, no radula and reduced head
Squids, Octopuses, nautiluses, and cuttlefish; reduced or absent shell, advanced eyes, tentacled foot, well developed head.
2 pairs on the head, used as eye stalks and feelers.
Brings air into the respiratory chamer of the snail.
The flat coil of the snail shell
non flat curl of the snail shell.
Attaches a mussel to a hard surface. Very hard substance.
The point of a bivalve organisms shell, where they connect.
Do gas, food, and waste exchange for the clam.
Opposite end of the umbo.
Anterior and Posterior adductor muscles
Muscles that contract to pull the two valves together.
Assist in correct closing of valves
Assist in correct closing of the valves.
The line where the mantle attached to the valves (via pallial muscle)
External evidence of growth on the valves.
The smooth innermost layer that is in contact with the animal.
the strongest layer of the shell made of large crystals of calcium carbonate.
An outer waterproofing and protective layer.
Open cavities that bath the tissues directly with hemolymph.
Acellular substance which functions like blood.
The squid uses the funnel to suck water in and out, expels waste, and expels ink. Uses it for propulsion as well.
The bottom part of the mantle of a squid that rings around the head.
The pseudo shell of a squid, made of chiton.
Provide shell material for the eggs of a squid.
The "ink" of a squid, a melanin-rich substance.
2 are found in a squid, each pumping for their respective gills.
Pumps blood through out entire body.