- Chapter 1: Reproduction in Organisms
- Chapter 2: Sexual Reproduction in Flowering Plants
- Chapter 3: Human Reproduction
- Chapter 4: Reproductive Health
- Chapter 5: Principles of Inheritance and Variation
- Chapter 6: Molecular Basis of Inheritance
- Chapter 7: Evolution
- Chapter 8: Human Health and Disease
- Chapter 9: Strategies For Enhancement in Food Production
- Chapter 10: Microbes in Human Welfare
- Chapter 11: Biotechnology Principles and Processes
- Chapter 12: Biotechnology and Its Application
- Chapter 13: Organisms and Populations
- Chapter 14: Ecosystem
- Chapter 15: Biodiversity and Conservation
- Chapter 16: Environmental Issues
Class 12 Biology Notes. Chapter 14 Ecosystem. PDF Free Download. Question Answers.