Mollusks 27-4
Mollusks27-4
Free-swimming larval stage of an aquatic mollusk.
Trochophore
Muscular part of a mollusk.
Foot
Thin layer of tissue that covers most of the mollusk’s body.
Mantle
Structure in mollusks made by glands in the mantle that secrete calcium carbonate.
Shell
Area beneath the mantle of a mollusk that contains the internal organs.
Visceral Mass
Tongue-shaped structure used for feeding by snails and slugs.
Radula
Tubelike structure through which water enters and leaves a mollusks body.
Siphon
System in which blood is not always contained within a network of blood vessels.
Open Circulatory System