Grade 4 EVS

Ch- Agriculture in India

Notebook work

Textbook Exercise:

Q4. Answer the following questions. (Textbook exercise)

a. What is organic farming?

Ans- Organic farming is a method of farming where crops are cultivated without the use of artificial fertilisers and pesticides that contain harmful chemicals.

b. Explain in detail the process of threshing and winnowing.

Ans- Threshing: After harvesting, the grains areseparated from the crop, both manually and by using machines. This process is called threshing.

Winnowing: It means separating husk from grains. For winnowing, the grain with the husk is allowed to fall to the ground from a height.The heavy grains fall to the ground and the light weight husks get blown away with the wind.

c. What are bio fertilisers?

Ans. Bio fertilisers are the substances that contain living and dead organisms that release nutrients to the soil.

d. Write the difference between food crops and cash crops.

Ans.difference between food crops and cash crops are as follows:

Food crops	Cash crops
Crops such as rice and wheat that are grown for human consumption are called food crops.	Crops that are grown for sale either in a raw form or in semi-processed form such as cotton, jute, tobacco, etc. are called cash crops.

 

e. Explain the process of ploughing in agriculture.

Ans. The ploughing is the first step of the agriculture practices. In this step we turn up or loosen the soil with a plough, before the sowing of seeds. It is important to plough the soil to ensure that the plants and crops can grow well. It is done with the help of a plough pulled by bulls or a tractor.

f. Give two examples of Rabi crops.

Ans- Wheat, barley  are the examples of Rabi crops.

HOTS:

1. India is an agricultural country and different kinds of crops are 

grown here. However, many people in India die out of hunger and

food starvation. What according to you are the reasons for such

situations?

2. How does organic farming help the environment?

3. How animals are useful for agriculture?

Date: 18.1.2022

Workbook work:

Note: Complete the workbook work and upload on Between us by 21.1.2022, Friday.