Explanation: Rice is a staple food for most of the population in India.

• Though it is considered to be a crop of tropical humid areas, it has about 3,000 varieties which are grown in different agro-climatic regions.
• These are successfully grown from sea level to about 2,000 m altitude and from humid areas in eastern India to dry but irrigated areas of Punjab, Haryana, western U.P. and northern Rajasthan.
• In southern states and West Bengal, the climatic conditions allow the cultivation of two or three crops of rice in an agricultural year.
• In West Bengal farmers grow three crops of rice called ‘aus’, ‘aman’ and ‘boro’.

Source: NCERT