The contents of the book are prepared in such a way, that it will make the readers to analyse the topics we usually read in any standard or preferred textbooks in a different manner like comparing the theoretical contents with life events or any research observations. The idea behind this, is the questions asked in the part C of CSIR UGC NET examination conducted widely throughout India for the post of Assistant Professor and Junior research fellow. This book is filled with concepts regarding various subdivisions of Life Science like Systematic, ecology, biochemistry, cell biology, genetics, molecular biology, immunology, physiology and evolution.