The cereals belong to the grass family of plants. The grasses have fibrous 1._____, hollow, jointed 2.______ and narrow, long leaves. The legumes of the field and garden have long tap-roots, their stems are not jointed nor hollow, and their leaves are oblong and trifoliate. Corn, oats and 3.______ as well as most of the cereals, are comparatively rich in starches and fats, and hence are carbonaceous. They yield heat energy. The clovers, alfalfa, soy beans and cowpeas are richer in 4._______ in comparison to the cereals, and are therefore nitrogenous. They yield relatively less heat energy, but more physical energy. The 5.______ as a feed keep animals warm; the 6.______ give them physical strength. The cereals have the finest fattening qualities among feeds that come from the vegetable kingdom; while the legumes have the power of producing the greatest amount of growth of bone, muscle and tissue. The leading legumes of agricultural importance are red clover, white clover, sweet clover, alsike clover, crimson clover, alfalfa, soy beans and cowpeas.
6. Explain the meaning of the following word combinations in English: green revolution, genetic engineering, nomadic way of life, aquaculture, agribusiness, pesticides.
7. Use: a) the correct verb: