Dvukhstvorchatye Molliuski | Gdz Biologiia 7 Sumatokhin Klass

: Species like oysters, mussels, and scallops are important food sources for humans and marine life.

: Like most mollusks, they have an open circulatory system where the heart pumps blood into the body cavity. Internal Anatomy Summary Characteristic Digestive gdz biologiia 7 sumatokhin klass dvukhstvorchatye molliuski

: 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. : Species like oysters, mussels, and scallops are

: 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. : Species like oysters