Name the country where the mixed farming is common

The crop which is used both as food and fodder is :

Which crop will grow through simple subsistence agriculture?

Which is the most cultivated area of the world?

Which one of the following food crops, India possesses first position in the world?

Which is the dominant crop in commercial farming?

Which is the main food crop of the eastern and southern parts of the country?

What is the temperature that plants cannot have growth?

Which is the principal crop of the tropical region?

Which of the following is a kind of grass with a thick stem?