Question 9 of 15intermediateShort Answer2 marks

Colour the paper with a wax crayon. Now, put a drop of water on it. Do you observe any change?

Correct Answer

When a drop of water is placed on paper coloured with a wax crayon, the water does not get absorbed. Instead, the water droplet stays as a bead on the surface and does not spread.

The wax coating makes the paper waterproof.

The waxy coating on leaves makes them waterproof and keeps too much water from getting inside the plant. This helps the plant stay healthy and not get damaged. The wax crayon creates a similar waterproof barrier on the paper.

Exercise: Activity 9 | Q: 2 | (Page Page 18)
For More Understanding

Explanation

The chapter explains that the waxy coating on leaves makes them waterproof and keeps too much water from getting inside the plant. This helps the plant stay healthy and not get damaged. The wax crayon creates a similar waterproof barrier on the paper.

Solution Steps

  1. Water does not get absorbed on paper coloured with wax crayon

  2. Water droplet stays as a bead on the surface and does not spread

  3. Wax coating makes the paper waterproof

  4. Waxy coating on leaves makes plants waterproof and healthy

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