. Nature and development of plants. Botany. NATURE OF PLANTS 135 is treated with the eosin solution referred to above it will be seen that at first the water enters by way of the little stalk just as did the food that was supplied to the growing grain. In this way water is supplied directly to the root of the embryo which lies near the stalk as shown in Fig. 86, B. If two seeds are soaked until soft and then sectioned so as to cut one across and the other longitudinally through the embryo it will be seen. Fig. 86. Grain and seedling of corn: A, two views of a grain—s, point of attacliraent of
. Nature and development of plants. Botany. NATURE OF PLANTS 135 is treated with the eosin solution referred to above it will be seen that at first the water enters by way of the little stalk just as did the food that was supplied to the growing grain. In this way water is supplied directly to the root of the embryo which lies near the stalk as shown in Fig. 86, B. If two seeds are soaked until soft and then sectioned so as to cut one across and the other longitudinally through the embryo it will be seen. Fig. 86. Grain and seedling of corn: A, two views of a grain—s, point of attacliraent of style; p, stalk attaching the grain to cob; emb, location of embryo. B, longitudinal section of a grain. The embryo consists of a plumule, pi, root, r, and scutellum, sc. en, endosperm. C, cross-section of a grain showing endosperm, en, surrounding the embryo, emh. D, diagram of the outer cells of the scutellum, showing the elongated cells that bring about a solution and absorption of the foods stored in the endosperm. E-G, stages in the growth of the seedliilg. that the endosperm forms the larger part of the grain and that the embryo is relatively small, consisting of a stem and root, a plumule of several closely wound leaves, and a shield-like organ, the scutellum (Fig. 86, B, C). The entire embryo may easily be removed from the endosperm with a knife if the seed is thoroughly soaked. Unlike the two preceding examples the corn is a mono- cotyledon and many regard the scutellum as a modified coty- ledon. This organ forms the enzymes which put into soluble. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Curtis, Carlton Clarence, 1864-1945. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
