Biology is one of the disciplines of science under which, we study about the various aspects of living organisms. In its given premises, biology includes a wide range of topics such as physiology, morphology, anatomy, behavior, origin, distribution, etc. Broadly, Biology is categorized as Zoology (i.e. study of Animalia Kingdom) and Botany (i.e. study of Plantae Kingdom). Because of having wide range of topics, this tutorial is divided into two parts namely Biology Part 1 and Biology Part 2. Further, these two parts are divided into different chapters for an easy understanding.