This book new Jyothi All in one Series for Plus Two Zoology' is to the students of class XII under the 10+2 pattern of education for HSC, VHSC and CBSE. This book is prepared strictly in accordance with the new NCERT syllabus introduced for the higher secondary board examinations.his book contains Four Units. The first unit deals with the physiological process of reproduction in humans. The principles of inheritance and nature of genetic materials, basic idea about evolution etc. are included in the second unit. The third unit focuses on human health and disease and the importance of microbes in human welfare. The last unit deals with the importance of biodiversity, threat to biodiversity and its conservation. There are 8 Chapters in all the four units. Each chapter is enriched with Points at a glance, Additional information, NCERT questions, New evaluation questions, Edumate questions, questions from previous examinations and their answers. Previous entrance questions and their solutions are also included in the last section of each chapter. Previous CBSE questions are also added in the last part.