In this article we will discuss about the economic importance of houseflies. Apart from their annoying habits the houseflies are carriers of organisms which cause several diseases in man. Flies feed on garbage, manure, and faeces; they also visit them for laying eggs, they pick up disease germs and then come to feed on dining tables, kitchens, restaurants, and sweetshops. [...]
The following points highlight the three main types of metamorphosis in insects. The types are: 1. Ametabolic Metamorphosis 2. Heterometabolic Metamorphosis 3. Holometabolic Metamorphosis. Type # 1. Ametabolic Metamorphosis: In lower insects (Collembola, Thysanura) the young which hatches from an egg is a miniature of the adult and is called a nymph, it differs from the adult in having immature [...]
The below mentioned article provides a paragraph on Phylum Arthropoda. The phylum Arthropoda (Gr., arthros - jointed + podos = foot) is the largest group of the animal kingdom. Phylum Arthropoda surpasses all others both in number of individuals and in the diversity of their ecological distribution. They have undergone an adaptive radiation for aerial, aquatic, terrestrial, and parasitic environments [...]