What We Will Cover in the Chapter

Last updated at June 7, 2026 by

We will learn what a cell is, how living bodies are organised, what microorganisms are, and how they are connected to our daily lives.

Understanding the Name of the Chapter

Invisible Living World
Tiny living things too small to see with the naked eye.
Beyond Our Naked Eye
Seen only with a microscope or a foldscope.
  • We will start with the cell, the basic unit of life.
  • We will see how cells build up a whole organism.
  • We will then explore microorganisms and how they help us.

Topics We Will Study in This Chapter

Topics We Will Study
2.1 What Is a Cell?
2.1.1 Variation in Shape and Structure of Cells
2.2 Levels of Organisation in the Body 2.3 What Are Microorganisms?
2.4 How Are We Connected to Microbes?
2.4.1 Key Players in Cleaning the Environment 2.4.2 Microorganisms and Food 2.4.3 Amazing Microalgae
2.5 Why Cell Is the Basic Unit of Life
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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

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