CLASS - 4 // SUBJECT - SCIENCE // LESSON - 6 // PLANTS IN THE SURROUNDINGS AND ENVIRONMENT //

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LESSON – 6

PLANTS IN THE SURROUNDINGS AND ENVIRONMENT

 

1.     Why are plants important for us?

The plants are very important for us as we depend on them for food, clothing, medicine and other things. They also provide oxygen to us.

 

2.    What are the two main parts of a plant?

The two main parts of a plants are: -  

a.    Shoot – the part above the soil

b.    Root – the part remains under the soil

 

3.    State any three functions of the roots?

a.    Roots fix plants firmly in the soil

b.    They help the plants to stand straight

c.    They hold the soil and prevent it from being washed away by water or wind.

 

4.    What is photosynthesis? Draw a labelled diagram

The process by which green plants prepare their own food using carbon dioxide, water and minerals in the presence of sunlight and chlorophyll is called photosynthesis.


 

 

5.    What is transpiration?

The water absorbed by roots is carried to various parts of the plant through stem. Leaves release some of this water in the form of water vapor, to the atmosphere through the stomata. The process by which plants release water to the atmosphere is called transpiration.

 

6.    List four useful products that we obtain from plants.

Plants gives us many useful things such as food, fibre, medicines, rubber and wood.

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