Class Bivalvia

 Class pelecypoda [Bivalvia or Lemellibranchiata]


Pelekus=hatchet podos=foot lamella=plate branchia=gill

It is the second largest class of molluscs

Exclusively aquatic; mostly marine, some fresh water

Body laterally compressed

Body is covered with a mantle formed of two folds (right&left ) attached dorsally to the body.

Radula is absent

Feeding is by filtration

Sexes are separate