The aim of this book is to present the signal book including the research methodology for M. Phil and Ph.D. scholars of all Universities of the India. "A Book on Research Methodology for Ph. D. Course Work: In Life Sciences” is a comprehensive guide that covers all aspects of research methodology across various disciplines. Research Methodology, an important subject in itself, is taught to research students of sciences, to aid them in making precise analysis. The books written on research methodology are mostly in scientific language and hence are difficult to understand. So, authors have made an attempt to write this book in very non-technical language. It has been attempted that students who try to understand the research methodology through self-learning may also find it easy. The chapters are written with that approach. Even those students who intend to attain high level of knowledge of the research methodology in social sciences will find this book very helpful in understanding the basic concepts before they read any book on research methodology. This book is useful to those students who offer the Research Methodology at Post Graduation and M. Phil. Level. This book is also very useful for Ph.D. Course Work examinations. The language used in the book is straight and simple clearly focusing on the essential aspects.