Unit-VI Reproduction Chapter-2: Sexual Reproduction in Flowering Plants Chapter-3: Human Reproduction Chapter-4: Reproductive Health Unit-VII Genetics and Evolution Chapter-5: Principles of Inheritance and Variation Chapter-6: Molecular Basis of Inheritance Chapter-7: Evolution Unit-VIII Biology and Human Welfare Chapter-8: Human Health and Diseases Chapter-10: Microbes in Human Welfare Unit-IX Biotechnology and its Applications Chapter-11: Biotechnology - Principles and Processes Chapter-12: Biotechnology and its Applications Unit-X Ecology and Environment Chapter-13: Organisms and Populations Chapter-14: Ecosystem Chapter-15: Biodiversity and its Conservation