Foot Mollusca

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a 50-second video of snails (most natica chemnitzi , cerithium stercusmuscaram) feeding on sea floor in gulf of california, puerto peñasco, mexico


the underside consists of muscular foot, has adapted different purposes in different classes. foot carries pair of statocysts, act balance sensors. in gastropods, secretes mucus lubricant aid movement. in forms having top shell, such limpets, foot acts sucker attaching animal hard surface, , vertical muscles clamp shell down on it; in other molluscs, vertical muscles pull foot , other exposed soft parts shell. in bivalves, foot adapted burrowing sediment; in cephalopods used jet propulsion, , tentacles , arms derived foot.








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