CBSE · Class 8 · Science · Chapter 2

The Invisible Living World: Beyond Our Naked Eye

Enter the microscopic world and explore microorganisms, cells and living structures that cannot be seen with unaided eyes.

9 lessons 45 min
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Lessons in this chapter

  1. 1Seeing the Invisible WorldFind out how lenses opened a world of living things too small for our eyes.
  2. 2Exploring Plant and Animal CellsObserve two familiar tissues to discover the parts shared by cells and the features that differ.
  3. 3Cell Shapes and Levels of OrganisationConnect a cell’s shape to its job and trace how cells build a whole organism.
  4. 4Discovering Microorganisms Around UsUse water and soil observations to recognise the diversity of tiny living organisms.
  5. 5Microbes That Recycle and CleanFollow decomposers as they turn waste into nutrients and support other useful processes.
  6. 6Microbes in Food and FermentationCompare two food experiments to understand yeast, curd bacteria and conditions for growth.
  7. 7Microbes That Support Plants and Aquatic LifeMeet helpful microbes in legume roots and water ecosystems.
  8. 8Why the Cell Is the Basic Unit of LifeBring plants, animals and microbes together through the idea of the cell.
  9. 9Chapter Summary and PractiseConnect the entire hidden living world and apply the chapter’s ideas to fresh situations.
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