In this article we will discuss about the structure of Valella with the help of a diagram. 1. It is a small pelagic and marine colony in the tropical seas. 2. It is discoidal in shape and is of bright blue colour. 3. The disc is generally oval and flat, but may also be some-what rhomboidal in some cases. 4. [...]
In this article we will discuss about the structure of Porpita with the help of a diagram. 1. It is a marine and polymorphic colony found in abundance around southern Atlantic coasts. 2. It is discoidal in shape and thus resembles a medusa. 3. A distinct and independent float is absent, but the disc is chitinous, multi-chambered and encloses [...]
In this article we will discuss about the structure of Ctenoplana with the help of a diagram. 1. It is a small, marine animal and is found on the coast of Sumatra Indo-China and Japan. Its colour is olive green or brown above. 2. It swims freely and also creeps on its ciliated ventral surface which has mouth in the [...]