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Section 9.3 Vocab

The vocab from section 9.3 about molluscs in marine biology.

TermDefinition
Mantle The outer layer of tissue that secretes the shell of molluscs.
Foot The muscular locomotory structure of molluscs.
Radula The ribbon-like band of teeth of molluscs.
Chitin The main component of the exoskeleton of many animals.
Valve Any of the 2 shells of bivalves and lamp shells.
Umbo The region around the hinge of a bivalve's shell.
Siphons The tube-like extension through which water flows in and out of the mantle cavity in bivalves and cephalopods, and in tunicates.
Byssal Thread Strong fibres secreted by mussels for attachment.
Biofouling Unwanted settlement of organisms on submerged surfaces of boats, pilings, and other structures.
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 Clusters of nerve cells in gastropods and bivalves.
Spermatophore A packet of sperm in cephalopods.
Veliger A planktonic larva in gastropods and bivalves.
Created by: CommsMKSoz
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