. Introduction to botany. Botany. ROOTS AXD THEIR RELATIOX TO PLANTS 23 is called turgidity. Turgor doubtless helps to force water up- ward through the stem. The distention of cells due to turgor also accounts for the rigid or erect position of most leases, growing shoots, and succulent stems. Each distended cell, like an inflated balloon, assumes a semi-rigid position, and a mass of distended cells pressing against one another makes the whole. Fig. 17. A young cucumber plant (grown in a flowerpot) At left, in normal condition; at right, much wilted from having been left unwatered for several
. Introduction to botany. Botany. ROOTS AXD THEIR RELATIOX TO PLANTS 23 is called turgidity. Turgor doubtless helps to force water up- ward through the stem. The distention of cells due to turgor also accounts for the rigid or erect position of most leases, growing shoots, and succulent stems. Each distended cell, like an inflated balloon, assumes a semi-rigid position, and a mass of distended cells pressing against one another makes the whole. Fig. 17. A young cucumber plant (grown in a flowerpot) At left, in normal condition; at right, much wilted from having been left unwatered for several days structure rigid. But just as, when the air escapes from a balloon, its wall collapses of its own weight, so the cells of the leaves and shoots collapse when, on account of loss of water, they lose their turgidity. "When soil water is not available to the plant, the outgo from the leaves is often greater than the income from the roots, and in such cases wilting follows (fig. 17). If -nater does not again become available, the plant will die, but with a renewed supply turgidity and the resulting rigidity soon 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York, [etc. ] Ginn and company
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