Biology is the science of observations. The more we observe about ourselves and our surroundings, the more we can perceive which multiplication and division mean the same thing. As per changing only science in the life processes. It is the site patterns of studying biology have changed a lot. lt was previously based on memorizing and cramming the time as nets, but today it is largely based on understanding and applicatory concepts like genetics, and molecular biology. biotechnology, etc. The need of the present scenario is to understand the subject and apply the concepts in question-solving. The pre-medical examinations these days also do not focus much on asking questions based on just theoretical aspects but they put stress on applicatory concepts. Assertion-reasoning type, Statement basis, Conflict of Interest, and Case study-based questions are very common nowadays. This book "NEET BIOLOGY, First Edition, Text Basis Practice and Preparation" is such an effort to prepare the students for the National Eligibility cum Entrance Test for Under Graduates (NEET-UG). The questions are strictly based on the curriculum by NCERT biology books. All efforts are been made to produce an errorless book. The unique point about this book is that it explains the conceptual questions. At the end of VOL-II, 5 Mock tests (sample papers) and previous years' papers (2018-2023) are attached to develop examination temperament in the students. The papers are provided with OMR sheets so that students try solving the paper with the same temperament as he/she has to face in the actual examination hall. Finally, I will be glad to receive constructive criticism and valuable ideas to improve the next editions of this book. I am highly thankful to all of you for your support towards the first edition of this book.