In this article we will discuss about the structure of Beroe with the help of a diagram. 1. Commonly known as "Mitre jelly fish" and is found in groups or swarms throughout (cosmopolitan). 2. Body thimble-shaped and laterally compressed with broad oral and narrow aboral end. 3. Tentacles and oral lobes are absent and mouth is a wide opening leading [...]
In this article we will discuss about the structure of silk moth (Bombyx) with the help of a diagram. Fig. 254 BOMBYX LIFE CYCLE 1. It is otherwise called "Bombyx" and produces silk. It is reared on mulberry leaves. 2. The body is divisible into head, thorax and abdomen. The abdomen is short and stout. 3. The colour is creamish [...]
In this article we will discuss about the life cycle of Anopheles with the help of a diagram. Fig. 252 ANOPHELES LIFE CYCLE The life cycle of Anopheles has following three stages: The Eggs: 1. The eggs are whitish and boat-shaped. 2. 50 to 80 eggs are laid on water-surface singly and are floating horizontally through air floats. 3. In [...]