The science of biology was invented by Aristotle (384–322 BC). Before Aristotle, many Greek philosophers had speculated about the origins of the Earth and of Life, but their theorizing was unsupported by empirical investigation. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine and the works of Aristotle and Galen in the ancient Greco-Roman world. Grade 12 Biology is challenging and requires a lot of time and dedication to succeed. It give me a great pleasure in placing this book in the hands of 12th Class Biology students. The Content of the book prepared as per revised syllabus of CBSE and the need of students for their Academics &Competitive Exams. While describing the course content sufficient care has been taken to quote the suitable examples wherever required. Every attempt has been made to provide the maximum number of diagrams , flowcharts , difference table , a very simple language for easy understanding .

The Content of the book are Organised well and the book also contain Solved questions as per Syllabus 2023. Book applicable to all state of India and Written as per NCERT Design. At the end of Each Chapter Important Questions are attached as per CBSE Exam Style.