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10.1 Science Vocab.
Term | Definition |
---|---|
mollusk | invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell. |
open circulatory system | the blood is not always inside blood vessels. |
gill | organs that remove oxygen from the water. |
gastropod | the largest group of mollusks that have a single shell or no shell at all. |
herbivores | animals that eat only plants. |
carnivores | animals that eat only other animals. |
radula | a flexible ribbon of tiny teeth. |
bivalves | mollusks that have two shells held together by hinges and strong muscles. |
omnivores | animals that eat both plants and animals. |
cephalopods | an ocean-dwelling mollusk whose foot is adapted to form tentacles around its mouth. |