Gdz Biologiia 7 Sumatokhin Klass Dvukhstvorchatye Molliuski -

: As filter feeders, they clean bodies of water by removing organic suspension.

: The body is laterally compressed and divided into two main parts: the trunk and the wedge-shaped foot . Unlike gastropods, bivalves lack a head, tentacles, and eyes. gdz biologiia 7 sumatokhin klass dvukhstvorchatye molliuski

: Some species (pearl oysters) produce pearls and mother-of-pearl (nacre) used in jewelry. : As filter feeders, they clean bodies of

: Like most mollusks, they have an open circulatory system where the heart pumps blood into the body cavity. Internal Anatomy Summary Characteristic Digestive : As filter feeders

: They are filter feeders . Water enters through an inhalant siphon, passes over the gills where food particles are trapped, and exits through an exhalant siphon.