Elements of agriculture, for use Elements of agriculture, for use in schools elementsofagricu00mcbr Year: 1901 PLANTS AND TIIEIK SEED 35 seeds. A seed planted deep in the soil will not grow, no matter if siip])lied with water and heat; but on or near the surface it spronts. Air, then, must also he neces- sary for the sprouting of seeds. By means of a few sim- ple experiments, described at the end of this chapter, any one may prove for his own satis- faction that water, heat, and air are necessary to sprouting seeds. A seed contains not only the young plant or embryo, Imt a sufficient store of
Elements of agriculture, for use Elements of agriculture, for use in schools elementsofagricu00mcbr Year: 1901 PLANTS AND TIIEIK SEED 35 seeds. A seed planted deep in the soil will not grow, no matter if siip])lied with water and heat; but on or near the surface it spronts. Air, then, must also he neces- sary for the sprouting of seeds. By means of a few sim- ple experiments, described at the end of this chapter, any one may prove for his own satis- faction that water, heat, and air are necessary to sprouting seeds. A seed contains not only the young plant or embryo, Imt a sufficient store of food to nourish it until it can take its food from the soil. Take a fresh bean and notice how it is divided into two equal parts, joined at one end by a small stem. These two parts are called the seed leaves, and con- tain a store of food sufficient to nourish the growing plant until it can feed itself through its roots. Fig. 1 shows a young bean plant re- cently sprouted; c c are the seed leaves, and as the plant grows larger thev grow smaller till thev are finally ' ^ ^ ./ YiG. 1—Bean seed re used up and only a wilted shell ^<^-X'l ^TT^ol^Sl mains, which soon falls off from t^-.^-^fo^iginardSw* ,1 , ing from photograph.) the stem. • & t & i All seeds are j^rovided with a store of food for the use of the young plant, for young j^lants, like young animals, are not able to take care of themselves just at first.
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