Biology is a field in which we study the life of living organisms including their physical, chemical processes, molecular interaction, physiological mechanisms, development and evolution. Although, biology has been divided into indefinite number of branches such as biotechnology, cytology, molecular biology and so on. However, in generalised way biology has been divided into three branches that are
1. Botany - Branch of science that deals with Plants
2. Zoology - Branch of science that deals with animals
3. Microbiology - Branch of science that deals with microorganisms