1. What are the sources of water?
2. Give three reasons why irrigation is necessary in India,
3. What are the different types of irrigation practised in India?
4. (a) What do you understand by tank irrigation?
(b) State two disadvantages of tank irrigation.
Answers
Answer:
1) Natural springs. In the olden days, one could just drink from a spring. ...
Lakes and rivers. These days, these are quite polluted. ...
2)The monsoons are uncertain. So irrigation is necessary to protect crops from drought as a result of uncertain rainfall.
(It does not rain equally in all parts of the country. So irrigation is necessary for agriculture in less rainfall areas.
3) some modern methods of irrigation include sprinkler irrigation, and drip irrigation.
4) An irrigation tank or tank is an artificial reservoir of any size. They are mainly found in India. ... Tank irrigation is practised by constructing mud banks across small streams to make a small reservoir which collect excess water during the rainy season.
Tanks use up large areas of land which could be used for agriculture.
They dry up in summer and are not of much use.