Gdz Biologiia 7 Sumatokhin Klass Dvukhstvorchatye Molliuski Onlain May 2026

: Most bivalves are filter feeders. They draw water into their mantle cavity through a siphon, where specialized gills trap organic particles. Internal Systems

: They breathe through plate-like gills (ctenidia) located in the mantle cavity. : Most bivalves are filter feeders

: Unlike gastropods (snails), bivalves lack a distinct head. Their body consists of a torso and a muscular "foot" used for burrowing or anchoring. : Most bivalves are filter feeders