The phylum Arthropoda contains animals with segmented appendages on their body segments. Arthropods occupy every habitat, and are in many respects the most successful animal group on Earth. There are conservatively over 1 million species of living arthropods. Biologist E.O. Wilson estimates there are 10 million species, 9 million of which are arthropods. Certain groups of arthropds have extremely complete [...]
In this article we will discuss about the classification of phylum arthropoda. 1. Arthropoda is the largest phylum comprising bilaterally symmetrical, triploblastic, coelomate invertebrates. 2. Body segmented but most species exhibit some degree of reduction in metamerism. 3. The segments usually bear paired, lateral and jointed appendages, variously modified as jaws, gills, legs, etc. 4. The body is covered with [...]
The following points highlight the top two ways for managing harmful insects. The ways are: 1. Chemical Management 2. Biological Management. Way # 1. Chemical Management: Chemicals used to kill insects are known as insecticides. Injurious insects are killed by certain chemicals, viz. hydrocyanic acid, sulphur dioxide, arsenic, etc. But there are other chemicals which are more specially detrimental to [...]