In this article we will discuss about the physical organization of the animal body. The animal body is composed of one or more cells. The simplest animals are the unicellular protozoa. In such a primitive group, a single cell forms the entire organism, and the living matter of the cell has to carry on all the vital activities, such as [...]
In this article we will discuss about:- 1. Habitat and External Feature of Ascaris 2. Body Wall and Cavity of Ascaris 3. Alimentary System 4. Excretory System 5. Nervous System 6. Reproductive System 7. Life-History. Contents: Habitat and External Feature of Ascaris Body Wall and Cavity of Ascaris Alimentary System of Ascaris Excretory System of Ascaris Nervous System of Ascaris [...]
In this article we will discuss about the economic importance of insects. Some insects are useful to man, while many are harmful and le injury is to such an extent that it has threatened the existence of man on this globe. For both the reasons, insects are of great economic importance and its study constitutes the subject matter of entomology, [...]