Chapter 3 · ICSE Class 6 Biology (Selina Concise)

Cell - The Structure and Functions

Discover the cell as the basic unit of life, its key parts, and the differences between plant and animal cells.

🔬 Chapter 3

A plant cell compared with an animal cell A plant cell shown as a rectangle with a cell wall, a large vacuole, and a nucleus, next to an animal cell shown as a rounded shape with just a nucleus and no cell wall Plant Cell Animal Cell
3.1

Basic Parts of a Cell

A cell has a cell membrane (controls what enters/exits), cytoplasm (jelly-like fluid where processes occur), and a nucleus (controls cell activities, contains genetic material).

1

What controls the activities of a cell and contains genetic material?

The nucleus

2

What surrounds and protects the contents of a cell?

The cell membrane

3.2

Plant Cell vs Animal Cell

Plant cells have a cell wall, chloroplasts, and a large vacuole, which animal cells lack.

1

Name one structure found in plant cells but not animal cells.

Cell wall (or chloroplast, or large vacuole)

2

Why do plant cells have chloroplasts but animal cells don't?

Chloroplasts allow plants to carry out photosynthesis to make their own food, which animals don't do

Practice

Exercises

1. What is the basic unit of life called?

2. What part of the cell controls its activities?

3. Name one structure unique to plant cells.

4. What is cytoplasm?

5. What is the function of the cell membrane?