Like most bivalves, Pinctada margaritifera is a sedentary filter feeder that depends on currents, produced by cilia on their gills, to gather food particles. They have no head, no radula and very little cephalization as is seen in other molluscs.

Is radula present in pinctada?

Pinctada sp. Pila possesses radula . It is a rasping organ of molluscs situated in a sac on the underside of the buccal cavity . It is used for tearing plant material by rubbing it against the hardened surface of the mouth .

Do all molluscs have radula?

The radula is unique to the molluscs, and is found in every class of mollusc except the bivalves, which instead use cilia, waving filaments that bring minute organisms to the mouth. ... Other predatory marine snails, such as the Conidae, use a specialized radular tooth as a poisoned harpoon.