Biology is the study of concepts of natural science of life and living organisms. It consists of the study of physical structure of a living organism, important molecular interactions, chemical processes, development and evolution. Studying biology as a science helps to understand human life.
The study of Biology in class IX becomes important as we learn about the diversity of life forms and their value to humans, the intricacies and complexities of the living forms and develop respect for all life forms, the need for nutrition, health care, animal husbandry and natural resources, the cause, effect, and principles of treatment of various diseases and improve quality of human life, the importance of interdependence and independence, to solve problems of population, pollution, and conservation.