Question

Sample Test Paper
(Based on chapters 1 to 7)
A
Answer the following questions.
1.How do trees keep our surroundings clean?
2.Write any three features of living things.
3.What are the two main sources of food for us?
4.Why do climber plants need support?
5 What are the two main functions of our tongue?​

Answer 1

Explanation:

1. Trees absorb odors and pollutant gases (nitrogen oxides, ammonia, sulfur dioxide and ozone) and filter particulates out of the air by trapping them on their leaves and bark.

2. respiration, movement, excretion

3. Plants and Animals are the two main sources of food.

4. Climbers are those plants that need support to stand erect. It is because their stems are not strong enough to support them. They need support to climb up.

5. mixing mixing food with saliva

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