Question

Many plants of which family are rich source of proteins ?

• A. Cruciferae
• B. Leguminosae
• C. Liliaceae
• D. Compositae

Answer 1

The correct option is B Leguminosae

The history of legumes is tied in closely with that of human civilization, appearing early in Asia, the Americas (the common bean, several varieties) and Europe (broad beans) by 6,000 BC, where they became a staple, essential as a source of protein. Their ability to fix atmospheric nitrogen reduces fertilizer costs for farmers and gardeners who grow legumes, and means that legumes can be used in a crop rotation to replenish soil that has been depleted of nitrogen. Legume seeds and foliage have a comparatively higher protein content than non-legume materials, due to the additional nitrogen that legumes receive through the process. Some legume species perform hydraulic lift, which makes them ideal for intercropping. Farmed legumes can belong to numerous classes, including forage, grain, blooms, pharmaceutical or industrial, fallow green manure and timber species, with most commercially farmed species filling two or more roles simultaneously. So, plants of Leguminosae are rich source of proteins compared to Cruciferae, Liliaceae and Compositae.
Therefore, the correct answer is option B.