Question
Morphology of bivalves
Answer :
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Bivalves are a class of molluscs characterized by a laterally compressed body enclosed within two calcareous shells or valves joined by a hinge. The two valves are symmetrical along the hinge line but may differ in size or shape. Each valve consists of three layers: the outer periostracum (organic), the middle prismatic layer (calcium carbonate), and the inner nacreous layer. The hinge area contains teeth and sockets that interlock the valves, providing stability and alignment. The ligament, composed of elastic material, aids
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