In this article we will discuss about the structure of Sucking Lice (Pediculus) with the help of a diagram. Fig. 249 HUMAN BODY LICE 1. These are commonly known as sucking lice or common human body lice and are ectoparasites on the bodies of human beings, where by they such blood and also act as disease vector for typhus [...]
In this article we will discuss about the structure of Planaria (Dugesia) with the help of a diagram. 1. Commonly called planaria and is a fresh water form of cosmopolitan distribution. 2. The body is elongated, flattened and some-what conical. 3. A distinct head is present, which is triangular in form and bears a pair of semicircular ocelli and a [...]
In this article we will discuss about the structure of Cestum with the help of a diagram. 1. It is a marine, solitary and bioluminescent ctenophore commonly called 'Venus girdle' and is found in the tropical sea. 2. Body is elongated, ribbon-like is compressed laterally. The colour is green, violet or blue. 3. Comb plates for swimming are eight, four [...]