Klass Dvukhstvorchatye Molliuski Onlain - Gdz Biologiia 7 Sumatokhin

: They breathe through plate-like gills (ctenidia) located in the mantle cavity.

: 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

: They possess an open circulatory system with a heart and vessels. such as scallops and oysters

: Many species, such as scallops and oysters, are significant food sources for humans. Freshwater pearl mussels are also cultivated for pearl production. Unio (painter's mussel)

: Students typically study the Anodonta (swan mussel), Unio (painter's mussel), and marine species like the edible mussel and giant clam.