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Molluscs

TermDefinition
mantle A thin layer of tissue that secretes the shell.
foot usually used in locomotion
radula a ribbon of small teeth that is used to feed
chitin a highly resistant carboydrate also found in other invertebrates
valve Any of the two shells of bivalves
umbo the upper hump near the hinge of each shell, is the oldest part of the shell
siphon formed by the fusion of the edge of the mantle.
byssal thread that attach them to rocks and other surfaces
biofouling the undesirable accumulation of organisms that settle on the bottoms of boats, pilings, and other submerged structures
ink sac they can distract potential predators by emitting a cloud of dark fluid produced
pen the reduced thin shell of squids embedded in the upper surface of the mantle
crystalline style continually rotates the food to help in its digestion
open circulatory system blood flows out of vessels into open blood spaces
ganglion 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: Ajobarteh
 

 



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