Cell: The Building Block of Life Class 9 PPT & Notes Free

Class 9 Science Chapter 2 – Cell: The Building Block of Life PPT & Notes (66 Slides)

Download the complete Cell: The Building Block of Life Class 9 PPT (66 slides) with notes, free from Unique Study Point. Covers the full Chapter 2 of the new NCERT Science Exploration textbook (Session 2026-27) — no login, no sign-up needed.

What this Class 9 Cell PPT covers

Discovery of the cell by Robert Hooke in 1665, the cell theory, prokaryotic versus eukaryotic cells, and every organelle — nucleus, mitochondria, plastids, rough and smooth endoplasmic reticulum, Golgi apparatus and vacuoles — with clear labelled diagrams.

Cell membrane, diffusion and osmosis

The selectively permeable cell membrane, the cellulose cell wall, diffusion and osmosis explained through the potato-cup and carrot experiments, and what happens to cells in hypotonic, isotonic and hypertonic solutions.

Plant cell vs animal cell, and cell division

The full comparison of plant and animal cells, why plants need a rigid cell wall, plus mitosis and meiosis, contact inhibition and how errors in division lead to tumours.

Also useful for exam practice

The slides support the Revise, Reflect and Refine questions, MCQs, assertion-reason and case-study questions from the chapter, including cell size calculation using field of view.

Key Exam Facts

• Cell = basic structural AND functional unit of life
• Robert Hooke discovered the cell in 1665 using cork
• Limit of resolution of the human eye = 0.1 mm
• Total magnification = eyepiece magnification × objective magnification
• Cell membrane = selectively permeable; cell wall = freely permeable
• Osmosis = movement of water across a selectively permeable membrane
• Isotonic: cell stays same; Hypotonic: cell swells; Hypertonic: cell shrinks
• Cell wall is made of cellulose — present in plants, fungi and bacteria, NOT in animal cells
• Prokaryotic cells have no true nucleus and no membrane-bound organelles

Why Unique Study Point is different

We are the only site giving you a ready-made 66-slide illustrated presentation for this chapter — not just notes. Students revise faster, teachers teach directly. 100% free, no login, no sign-up.

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Also download our Describing Motion Class 9 PPT (85 slides), Tissues in Action Class 9 PPT and Use of Coordinates Class 9 PPT — free, no login.