Mollusks, Worms, Arthropods, Echinoderms

38 C CHAPTER 2 Mollusks, Worms, Arthropods, Echinoderms Characteristics of Mollusks Mollusks (MAH lusks) are soft-bodied invertebrates with bilateral symmetry and usually one or two shells. Their organs are in a fluid-filled cavity. The word mollusk comes from the Latin word meaning “soft.”Most mollusks live in water, but some live on land. ................
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