Torsion and Detorsion
All molluscs, except the Gastropoda, retain ancestral bilateral symmetry of the body. Mantle cavity lies posteriorly or laterally.Gastropods have an asymmetrical body with mantle cavity lying anteriorly, and the shell…
Zoology for UPSC and State PSC exams
All molluscs, except the Gastropoda, retain ancestral bilateral symmetry of the body. Mantle cavity lies posteriorly or laterally.Gastropods have an asymmetrical body with mantle cavity lying anteriorly, and the shell…