Molliuski Onlain: Gdz Biologiia 7 Sumatokhin Klass Dvukhstvorchatye

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

: Students typically study the Anodonta (swan mussel), Unio (painter's mussel), and marine species like the edible mussel and giant clam. : Unlike gastropods (snails), bivalves lack a distinct head

For further study and visual aids, students can refer to educational platforms like Yaklass or watch lesson summaries on YouTube . For further study and visual aids, students can

The Class Bivalvia (Двустворчатые моллюски) is a group of aquatic mollusks characterized by a shell composed of two hinged parts. In the 7th-grade biology curriculum by S.V. Sumatokhin and V.V. Pasechnik, these organisms are studied for their unique evolutionary adaptations to a sedentary lifestyle. Key Biological Features Sumatokhin and V

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