12-bio-chp-20
Other Chapters Biology Notes for Class 12
- Chapter 15: HOMEOSTASIS
- Chapter 16: SUPPORT AND MOVEMENTS
- Chapter 17: COORDINATION AND CONTROL
- Chapter 18: REPRODUCTION
- Chapter 19: GROWTH AND DEVELOPMENT
- Chapter 20: CHROMOSOMES AND DNA
- Chapter 21: CELL CYCLE
- Chapter 22: VARIATION AND GENETICS
- Chapter 23: BIOTECHNOLOGY
- Chapter 24: EVOLUTION
- Chapter 25: ECOSYSTEM
- Chapter 26: SOME MAJOR ECOSYSTEMS
- Chapter 27: MAN AND HIS ENVIRONMENT