How do the roots of land plants get oxygen for breathing?

One Line Answer

The roots can absorb oxygen from the small air spaces in soil.

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Chapter 4: Air - Evaluation [Page 56]

Chapter 4 Air
Evaluation | Q VIII. 2. | Page 56

Briefly state the importance of Oxygen.

What is the significance of water vapour in air?

Give reason:

When water is heated, we see bubbles rising up.

What are the two necessary conditions for rusting of iron?

Give the chemical name of rust.

Tabulate the various components of air, including the components with variable composition.

What is the source of carbon dioxide in air?

______ is the percentage of nitrogen in air.

All living things use oxygen for breathing.

Write a note on nitrogen.