Comprehensive science notes chapter 5 with diagrams , class 9th .

Document Description This document contains detailed notes on Chapter 5: The Fundamental Unit of Life from Class 9 Science (NCERT/CBSE syllabus). It explains the concept of the cell as the basic unit of life in a simple and structured way for easy understanding and quick revision. Features of the notes: Clear explanation of cell theory and its importance. Differences between prokaryotic and eukaryotic cells. Detailed study of cell organelles – nucleus, mitochondria, plastids, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, etc. Notes on plasma membrane, cell wall, and diffusion/osmosis with examples. Well-organized bullet points and diagrams for better recall. Suitable for class tests, board exams, NTSE, and Olympiads. Topics Covered: 1. Introduction to the Cell – the basic structural and functional unit of life 2. Cell Theory (Schleiden, Schwann, Virchow) 3. Prokaryotic vs. Eukaryotic cells 4. Plasma membrane and transport (diffusion, osmosis) 5. Cell wall and its function 6. Nucleus and its parts (chromatin, nucleolus) 7. Cytoplasm 8. Cell organelles: Mitochondria Plastids (chloroplasts, chromoplasts, leucoplasts) Endoplasmic Reticulum (smooth & rough) Golgi apparatus Lysosomes Vacuoles Ribosomes 9. Summary and key points for revision --- In short: This document provides complete, easy-to-learn notes on “The Fundamental Unit of Life” with diagrams, definitions, and key explanations – ideal for revision and scoring well in exams.