In this article we will discuss about the structure of Terebra & Terebellum (Shankh) with the help of a diagram. 1. They are called "turret shells" and are marine molluscs. 2. They exhibit torsion and the nervous system is twisted in a figure of 8. 3. In these molluscs the left side has completely atrophied. 4. They have single [...]
In this article we will discuss about the structure of Razor Fish (Solen) with the help of a diagram. 1. Its common name is razor shell or razor fish and is found in India and U.S.A. It is a burrowing bivalve. 2. The shell valves are long, of equal size, with parallel straight margins and with terminal umbo. 3. The [...]
In this article we will discuss about the structure of Ship Worm (Teredo) with the help of a diagram. 1. They are commonly known as "ship worm" and are found in deep holes and burrows in submerged wood of ships and boats. 2. The body is worm-like, elongated and without any distinct head. 3. The mantle is tubular, runs all [...]