. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. Fig. 9.—Stoma of Cereal (diagrammatic), i. Open. 2. Closed. The thickened portion of the guard-cell is shaded. the guard cell becomes bent outwards and the stomatal pore is opened. That the opening of the stoma is actually accompanied by a distension of the guard cells has been shown by Schwendener (i881), to whom much of our exact knowledge of the mechanism of this movement is due ; he found an increase in width of the guard cell of about 10 per cent. The effect of loss of water is strikingly sh
. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. Fig. 9.—Stoma of Cereal (diagrammatic), i. Open. 2. Closed. The thickened portion of the guard-cell is shaded. the guard cell becomes bent outwards and the stomatal pore is opened. That the opening of the stoma is actually accompanied by a distension of the guard cells has been shown by Schwendener (i881), to whom much of our exact knowledge of the mechanism of this movement is due ; he found an increase in width of the guard cell of about 10 per cent. The effect of loss of water is strikingly shown by plasmolysing a strip of epiderm with open stomata ; closure at once takes place. Other types of structure and mechanism occur. The most important of these, characteristic of the grasses and cereals, may be described (Fig. 9). The two ends of the guard cell are thin walled, and are joined on one side to those of the sister guard cell. The wall of the middle portion is. 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 Skene, Macgregor. New York, The Macmillan Company
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Keywords: ., book, bookcentury1900, bookdecade1920, booksubjectplantphysiology
