On the basis of production:
(i) Primary or Agricultural Sector:
This sector consists of agriculture and its allied activities including
- dairy
- poultry
- cattle rearing
- shing,
- forestry, and
- animal husbandry etc
In the primary sector, most of the goods are produced by using natural resources, since India is an overpopulated agro-based economy, therefore, this sector plays an important role in economic growth.
(ii) Secondary or Manufacturing Sector:
- This sector is also known as an industrial sector.
- In this category, all types of manufacturing sector like large-scale, small-scale and tiny scale are included.
- Small and tiny scale industries include clothes, candle, poultry, matchbox, hand loom, toys etc.
- These units provide huge employment.
- On the other hand, large-scale industries like iron and steel, heavy engineering, chemicals, fertilizers, shipbuilding etc. contribute a huge amount to our gross domestic product.
(iii) Service or Tertiary Sector:
- This sector produces different services like transport, communication, banking, insurance, trade and commerce, including both national and international trade.
- Moreover, all the professional services like doctors, engineers, teachers, lawyers etc. come under service sector.
Again the services provided by the government itself for the welfare of citizens are also included in the tertiary sector.