Q.Write the economic importance of Rice and ground nut.

Rice feeds people directly, and groundnut supplies both edible oil and protein, while improving soil fertility as a legume.

Rice (Oryza sativa, Poaceae):

1. Staple food -- the grain is the principal source of dietary carbohydrate/calories for more than half the world's population, especially across Asia.
2. Rice bran -- the outer bran layer removed during polishing yields rice bran oil (an edible/industrial oil), and the residual bran is a valuable cattle/poultry feed ingredient.
3. Straw -- dried stalks after harvest serve as cattle fodder, thatching material for roofs, and raw material for paper-making and rope/mat weaving.
4. Husk -- used as a low-cost fuel, as packing/insulation material, and in furfural and silica-ash manufacture.

Groundnut (Arachis hypogea, Fabaceae):

1. Edible oilseed -- the seeds (kernels) are a major oilseed crop; groundnut oil is widely used as a cooking oil and in manufacturing vanaspati (hydrogenated fat), soap, and cosmetics.
2. Direct food use -- seeds are consumed roasted or raw as a protein- and fat-rich food, and used in confectionery (peanut butter, sweets). …