The purpose of the writing the book entitled “Vastunisth Jeev Vigyan” is to provide ample practice questions to aspirants targeting various national and state level exams of lifesciences. At present, there is the lack of any all-inclusive bilingaul book for lifescience exams and this book will be boon for students. Using this book, the students can practice and plan strategy for entry level competitive examinations such as IIT-JAM, JNU/DU M.Sc Enterance, CSIR, GATE, State and National Eligibility Test, but not limited to these exams. This book covers all important topics of lifescience under 13 chapters namely, 1. Biochemistry, 2. Cell Biology, 3. Molecular Biology, 4.Signaling, Cancer and Immunology, 5. Developmental Biology 6. Plant Physiology, 7.Animal Physiology, 8. Genetics, 9.Diversity in Life Forms, 10. Ecology, 11.Evolution, 12. Applied biology and 13. Methods in Biology Book contains best information on the entire academic subject of lifescience for good understanding, assimilation, self-evaluation, and reproducibility. Although I have made every effort to make the book error free, I am under no illusion. I welcome comments, criticism and suggestions from the readers to further improve the content of this book.