9th Class Biology Chapter 1 – Introduction to Biology | ExamKhani
Biology is the study of living organisms and life processes. It explores the structure and function of cells, the basic unit of life, and examines how organisms are classified and interact with their environment. The chapter introduces key biological concepts such as the scientific method, characteristics of life, and the hierarchy of biological organization (cell → tissue → organ → organism). Understanding these fundamentals sets the foundation for deeper study of physiology, genetics, and ecology.
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