In this article we will discuss about Annelida:- 1. History of Annelida 2. General Characters of Annelida 3. Classification 4. Metamerism 5. Coelom 6. Segmental Organs 7. Reproduction. Contents: History of Annelida General Characters of Annelida Classification of Annelida Metamerism in Annelida Coelom in Annelida Segmental Organs of Annelida Reproduction in Annelida 1. History of Annelida: The annelids were by [...]
The following points highlight the three main species of cockroach. The species are: 1. Periplaneta Australasiae 2. Blatta Orientalis 3. Blatella Germanica. Cockroach: Species # 1. Periplaneta Australasiae: Periplaneta australasiae (Fig. 73.40 B) is commonly known as Australian cockroach. It was originally a native of Africa but, like other cockroaches, it has now spread to the whole of the world. [...]
The following points highlight the four main excretory organs of Palaemon Malcolmsonii. The organs are: 1. Antennary Glands 2. Lateral Ducts 3. Renal Sac 4. Integument. Palaemon Malcolmsonii: Excretory Organ # 1. Antennary Glands: The antennary gland or green gland of adult Palaemon lies enclosed within the coxal segment of each antenna. Each gland is an opaque-white structure of the [...]