: They breathe through plate-like gills (ctenidia) located in the mantle cavity.
For further study and visual aids, students can refer to educational platforms like Yaklass or watch lesson summaries on YouTube . : They breathe through plate-like gills (ctenidia) located
: Many species, such as scallops and oysters, are significant food sources for humans. Freshwater pearl mussels are also cultivated for pearl production. such as scallops and oysters
: Students typically study the Anodonta (swan mussel), Unio (painter's mussel), and marine species like the edible mussel and giant clam. Unio (painter's mussel)