. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 20 HOW PLANTS GROW FROM THE SEED. out of the seed, and let the root form from the lower end of it, while the plumule develops from its upper end directly into a strong leafy stem. Fig. 40 is an acorn cut through lengthwise. The whole kernel consists of a pair of very thick seed- leaves, loaded with starch, &c., and completely enclosing the very small and short stemlet, o
. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 20 HOW PLANTS GROW FROM THE SEED. out of the seed, and let the root form from the lower end of it, while the plumule develops from its upper end directly into a strong leafy stem. Fig. 40 is an acorn cut through lengthwise. The whole kernel consists of a pair of very thick seed- leaves, loaded with starch, &c., and completely enclosing the very small and short stemlet, or radicle, seen at the bottom. Fig. 41 is the acorn with the seedling Oak growing from it; the seed-leaves remaining in the shell, but feeding the strong root which grows downwards and the stem which shoots so vigorously upwards. 44. Acorns and horsechestnuts may not always be found germinating; but in the Pea we have a familiar case of this way of growing, wliich may be observed at any season by planting a few peas. Fig. 42 is a pea with the seed-coat taken off, after soaking. liere the seed-leaves are so thick that the pair makes a little ball; and the stout radicle or stemlet appears on the side turned to the eye. Fig. 43 shows the plantlet growing. The whole seed remains in the soil; the plumule, well nourished by the great stock of food in the buried seed-leaves, alone rises out of the ground as a strong shoot, bearing an imperfect scale-like leaf upon each of its earlier joints, and then producing the real leaves of the plant, while the radicle at the same time, without lengthening itself, sends down three or four roots at once. So the whole plant is quickly established, and all the early growth is made out of food provided for it the year before by the mother plant, and stored up in the seed. One more illustration we may take from 45. Indian Corn. Here the food provided for the early growth is laid up partly in the embi-yo, but mostly around it. Fig. 44 is a grain cut th
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1858
