In this article we will discuss about the L.S. ospharisium and ctenidium of pila with the help of suitable diagrams. L.S. Ospharisium of Pila: 1. It is the L.S. of Ospharidium of Pila. 2. It is the chemoreceptor organ of the animal, which helps in testing the purity of incoming water currents in mantle cavity. […]