. Agriculture for the Kansas common schools. Agriculture. Single stoma cut in two, showing the two guard cells, gg; opening of stoma, s; air sp^ce beneath stoma, a; green leaf cells, c. W hen the air outside is moist the guard cells take up water, swell, and press apart, leaving a pore, or opening, through which the water vapor from the in- side of the leaf conies out. When the outside air is dry, the guard cells lose water, become flabby, and lie close together, so that there is no opening, and the moisture is re- tained in the Cross section of leaf of common garden flag, or iris: e, u
. Agriculture for the Kansas common schools. Agriculture. Single stoma cut in two, showing the two guard cells, gg; opening of stoma, s; air sp^ce beneath stoma, a; green leaf cells, c. W hen the air outside is moist the guard cells take up water, swell, and press apart, leaving a pore, or opening, through which the water vapor from the in- side of the leaf conies out. When the outside air is dry, the guard cells lose water, become flabby, and lie close together, so that there is no opening, and the moisture is re- tained in the Cross section of leaf of common garden flag, or iris: e, upper epidermis; a, palisade cells: c, lower epi- dermis; d, water-conducting cells of leaf vein; /, fibrous cells of vein; s, food-conducting cells of vein. On the outside is the skin or epidermis. Just beneath the epidermis are many long cells which stand at right angles to it. These are called the palisade cells. They contain most of the green chloropksts. The other cells in the center of the leaf, as a rule, contain few or no chloroplasts. excess water, the epidermis has a great many tiny open- ings called stomata, through which water may pass out- ward in the form of vapor, and air may pass either inward or outward. The stomata are provided with spe- cial cells, so that the openings may be made compara- tively large or may be almost entirely closed. A stoma is about one thirty-fourth as large as the opening which may be made with the finest cambric needle. In order that the stomata may do their work properly there must be a great many cf them. The. 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 Call, Leland Everett, 1881- [from old catalog] comp; Kent, Harry Llewellyn, [from old catalog] joint comp. Topeka, The State of Kansas state printing plant
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
