pallial cavity मीनिंग इन हिंदी

The ctenidium ( a comblike respiratory apparatus ) goes along most of the length of the pallial cavity.
For fertilization, the arm is inserted into the female's pallial cavity and then becomes detached from the male.
Examination of specimens of both species supported the separation, including difference in shell sculpture, hinge morphology, and size of the pallial cavity.
These terrestrial gastropods have lost the ctenidium ( comb-like respiratory apparatus ) and osphradium, and the pallial cavity has been modified as a lung.
Some saltwater limpets such as Trimusculidae breathe air, and some freshwater limpets are descendants of air-breathing land snails ( e . g . the genus " Ancylus " ) whose ancestors had a pallial cavity serving as a lung.