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Marine Biology

Vocabulary: Molluscs: The Successful Soft Body

TermDefinition
Mantle The outer layer of tissue that secretes the shell of Molluscs.
Foot The muscular locomotory structure of mollescs
Radula The ribbon-like band of teeth of Molluscs.
Chitin The main component of the exoskeleton of many animals.
Valves Any of the two shells of bivalves and lamp shells.
Umbo The region around the hinge of a bivalve's shell.
Siphons (funnel) The tube-like extension through which water flows in and out of the mantle cavity in bivalves and cephalopods, and in tunicates.
Abyssal threads Strong fiber secreted by mussels for attachment.
Biofoulling Unwanted settlement of organisms on submerged surfaces of boats, pilings, and other structures.
Ink sac A gland found in some cephalopods that secretes a dark fluid used to discourage predators.
Pen The reduced, thin shell of squids.
Crystalline style An enzyme-releasing rod in the stomach of bivalves.
Open circulatory system A system where the blood or circulatory fluid is not contained in vessels and can flow into the body cavity.
Ganglia (pl. ganglia) Clusters of nerve cells in gastropods and bivalves.
Spermatophores A packet of sperm in cephalopods.
Veliger A planktonic larva in gastropods and bivalves.
Created by: user-2035768
 

 



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