. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. Fig. 19.—Structure of Stomata : sections through, i, Agave ameri- cana, X 450; 2, Hakea suaveolens, x 500; Nipa fniticam; 3, Verbena ciliata, x 600. (i and 2 after Renner, 3 after Bobisut, 4 after Lloyd.) much less water than one freely exposed. Recently Grad- man (1923) has shown that the pit is specially important in protecting the stoma from the drying effects of wind. Diffusion of carbon dioxide is not depressed to the same extent as is transpiration. Depression of transpiration also occurs i
. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. Fig. 19.—Structure of Stomata : sections through, i, Agave ameri- cana, X 450; 2, Hakea suaveolens, x 500; Nipa fniticam; 3, Verbena ciliata, x 600. (i and 2 after Renner, 3 after Bobisut, 4 after Lloyd.) much less water than one freely exposed. Recently Grad- man (1923) has shown that the pit is specially important in protecting the stoma from the drying effects of wind. Diffusion of carbon dioxide is not depressed to the same extent as is transpiration. Depression of transpiration also occurs if the stoma does not open directly into the mesophyll, but is separated from it by internal cuticularised cells or by sclerenchyma. Occasionally prolonged drought, or the death of the guard cells, leads to a complete stoppage of the passage by thick-. 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
