Biology – Class 9: The Fundamental Unit of Life (Cell Structure & Functions)

Introduction

Cells are the building blocks of life. Class 9 Biology (Chapter 5 – The Fundamental Unit of Life) introduces students to cell theory, organelles, and their functions.

Key Topics Covered:

1. Cell Theory
2. Prokaryotic vs. Eukaryotic Cells
3. Cell Organelles (Mitochondria, Nucleus, Chloroplast)
4. Plant vs. Animal Cell Differences

Exam Tips:

• Draw and label diagrams of plant and animal cells.
• Understand functions (e.g., Mitochondria = Powerhouse).

Conclusion

This chapter is essential for future topics like tissues and organs.