In this article we will discuss about the structure of Sea Mussel (Mytilus) with the help of a diagram. 1. Commonly called "sea mussel" and is a sedentary mollusc found near tide marks and attached to rocks or stones. 2. Shell made up of two equal pieces or valves, which are ovoid, slightly curved pointed in front and broad behind. [...]
In this article we will discuss about the structure of Pearl Oyster (Ostrea) with the help of a diagram. 1. Commonly known as "pearl-oysters", and are marine, sedentary and found attached to rocks and stones. 2. The shell is external and comprised of two unequal beautifully coloured valves. 3. Of the two valves the left is large and right is [...]
In this article we will discuss about the structure of Squid (Loligo) with the help of a diagram. 1. It is a marine mollusc commonly called squid. 2. Body is long, slender, pigmented and tapering behind. 3. A fin is present along its postero-lateral edges. 4. The shell is internal, feather-like and membranous. 5. The body is divisible into head, [...]