In this article we will discuss about the structure of Haemadipsa with the help of a diagram. 1. It is a terrestrial leech of tropics found attached to leaves, bushes, shrubs and to warm blooded vertebrates e.g., horse’s dogs and catties on Himalayan slopes. 2. The body is sub-cylindrical and measures about 3 cm in length and 0.5 cm [...]
In this article we will discuss about the structure of Polynoe with the help of a diagram. 1. It is a marine, carnivorous & phosphorescent worm found buried under stones & pebbles. 2. Animals are bilaterally symmetrical,, triploblastic, metamerically segmented and coeiomate. 3. A distinct head is present and body comprises of 12-15 segments. 4. The head bears three [...]
In this article we will discuss about the structure of Terebella with the help of a diagram. 1. They are red coloured, marine and tubicolous worms found along European and American coasts buried in mud between sea rocks. 2. Body elongated and measures about 15 to 20 cm. in length and is broad in front and narrow behind. 3. Head [...]