. Lessons in botany. Botany. 33 BOTANY. Demonstration 14. 75. To ihow the relation of the root hairs to the other cells of the root.— The teacher can make thin sections of young roots, with a razor, through the region of the root hairs, and mount them for microscopic study for demon-. Kig. 24. Section of corn root, showing rhizoids formed from elongated epidermal cells. stration before the class. Let each member of the class sketch a portion of the section, to show the root hairs, their relation to the other cells of the root, as well as some of the characters of the tissues of the root. 76. A
. Lessons in botany. Botany. 33 BOTANY. Demonstration 14. 75. To ihow the relation of the root hairs to the other cells of the root.— The teacher can make thin sections of young roots, with a razor, through the region of the root hairs, and mount them for microscopic study for demon-. Kig. 24. Section of corn root, showing rhizoids formed from elongated epidermal cells. stration before the class. Let each member of the class sketch a portion of the section, to show the root hairs, their relation to the other cells of the root, as well as some of the characters of the tissues of the root. 76. Action of the cell-sap.—In the absorption of the watery solutions of plant food by the root hairs, the cell-sap, being a more concentrated solution, gains some of the former, since the liquid of less concentration flows through the protoplasmic membrane into the more concentrated cell-sap, increasing the bulk of the latter. This makes the root hairs turgid, and at the same time dilutes the cell-sap so that the concentration is not so great. The cells of the root lying' inside and close to the base of. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and company
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