Biological classification of animals classs 12th notes

Animal classification, also known as taxonomy, is a hierarchical system that organizes living creatures based on their shared characteristics and evolutionary relationships. At the broadest level, animals are divided into two main groups: vertebrates, with a backbone, and invertebrates, lacking one. Vertebrates include mammals, birds, reptiles, amphibians, and fish, while invertebrates encompass a vast array of animals, such as insects, mollusks, and arachnids. Further classification involves grouping animals into classes, orders, families, genera, and species, based on increasingly specific traits. This system allows scientists to categorize and understand the diversity of life on Earth, revealing evolutionary connections among species and aiding in biological research and conservation efforts.