1. Which of the following is an example of a gastropod? a. scallops c. snail b. mussels d. oysters 2. How much of the entire mollusk family do gastropods account for? a. 1/2 c. 2/3 b. 1/3 d. none of the above 3. What is the definition to the term univalve? a. one shell c. one stomach b. one eye stalk d. one way digestive tract 4. What is the meaning of gastropod? a. stomach-foot c. shell-foot b. head-foot d. none of the above 5. What color is a gastropods blood? a. red c. blue b. purple d. colorless 6. What are the shells of most gastropods built from? a. calcium carbonate c. potassium chloride b. carbonate carbonate d. none of the above 7. How does a snail and other marine gastropods breathe? a. Taking in oxygenated I water in through its siphon tube. b. Taking in carbon dioxide through its siphon tube. c. Taking in oxygenated water in through its anterior tentacles. d. Taking in carbon dioxide in through its anterior tentacles. 8. What is the thick pad of tissue that closes like a trapdoor over the gastropods foot? a. radula c. univalve b. operculum d. none of the above 9. What is the ribbon like tooth that is used for scraping off and ingesting algae?? a. radula c. univalve b. operculum d. none of the above 10. What gastropod uses a harpoon to spear and inject toxins into its prey? a. Moon Snail c. Gary the Snail b. Cone Snail d. Cresant Snail