Which mollusc group includes primarily sedentary animals that use mucus- coated gills to trap fine food particles?

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Bivalves, such as clams and oysters, are primarily sedentary animals that use their mucus-coated gills to trap fine food particles. Chitons use a muscular foot to move around and scrape algae off rocks. Cephalopods, such as octopuses and squid, are active predators with well-developed eyes and tentacles. Gastropods, such as snails and slugs, have a single, asymmetrical shell and use a radula (rasping tongue) to feed on a variety of materials.

Which Mollusc Group Includes Primarily Sedentary Animals That Use Mucus-