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 [...]
In this article we will discuss about the life history of termite with the help of a diagram. Fig. 255 TERMITE LIFE CYCLE 1. This is the life history of termite or white ant which is a colonial social insect exhibiting well developed cast system. 2. They are polymorphic insects with chewing type of mouth parts. 3. They feed on [...]
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 [...]