12th Biology Notes Select Chapters 1. Introduction 2. Reproduction in Lower and Higher Plants 3. Reproduction in Lower and Higher Animals 4. Inheritance and Variation 5. Molecular Basis of Inheritance 6. Origin and Evolution of Life 7. Plant Water Relation 8. Plant Growth and Mineral Nutrition 9. Respiration and Circulation 10. Control and Co-ordination 11. Human Health and Diseases 12. Enhancement of Food Production 13. Biotechnology 14. Organisms and Populations 15. Ecosystems and Energy Flow 16. Biodiversity, Conservation and Environmental Issues