. Nature and development of plants. Botany. Fig. 82. Structure of the seed: A, section of an ovule of peppergrass in â tvhich the growth of the embryo is nearly completeâ-/, stalk or funiculus â attaching ovule to wall of ovary; mi, micropyle; i, integument; en, remains â¢of emdosperm. The embryo consists of a stem which is differentiated into a. typocotyl, hy, that ends below in a root, r, and root cap, and above in the plumule, pi, and two cotyledons, c, which curve over and lie one upon the other, w, vascular bundles which extend up through the stem into the coty- ledons where' they subdivi
. Nature and development of plants. Botany. Fig. 82. Structure of the seed: A, section of an ovule of peppergrass in â tvhich the growth of the embryo is nearly completeâ-/, stalk or funiculus â attaching ovule to wall of ovary; mi, micropyle; i, integument; en, remains â¢of emdosperm. The embryo consists of a stem which is differentiated into a. typocotyl, hy, that ends below in a root, r, and root cap, and above in the plumule, pi, and two cotyledons, c, which curve over and lie one upon the other, w, vascular bundles which extend up through the stem into the coty- ledons where' they subdivide, forming a network of veins. B, section of seed of water lily, after Conardâe, embryo surrounded by a layer of endosperm cells; mg, cells of the nucellus; i, integument. small as in the cases just cited or it may in turn absorb and replace all the cells of the endosperm and so come to occupy the space within the integument, as in the bean, pea, etc. (Figs. 82, A; 83, D). Various other arrangements may result; as for example, there may be remains of the nucellus and endosperm with the embryo (Fig. 82, B). The integument also undergoes various changes during these growths, often becoming hard or pa-. 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
Size: 1390px × 1797px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
