1. Phylum Mollusca Class Gastropoda
Eww…slugs and snails!

2. Gastropod Characteristics
Gastropod-means “Stomach Foot”
Named because their foot is on the same side as their stomach
Many have shells
Radula-rows of tiny teeth used to eat
Muscular foot used to move

3. Mollusk Mantle? All mollusks have a mantle
Thin layer of cells that covers their internal organs
Produces the shell in mollusks with a shell

4. Gastropod’s Circulate
Bivalves and Gastropods have an open circulatory system
No blood vessels or veins, blood just surrounds the internal organs.
Heart pumps blood into space inside the internal cavity of the organism.
Blood soaks the internal organs and then returns to the heart

5. Great Gastropods