. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 187 sionally be noted, such as the development of gametospores in either filament or the fusion of the adjacent cells of a filament by means of lateral tubular outgrowth. In other genera, there is a considerable modification in the process, as in some species of Zygnema, where the fusion is effected in the middle of the Fig. 107. Sexual reproduction of Spirogyra: A, in lower portion of figure the formation of the tubes between the opposite cells of the filaments is shown. Above the contents of two cells have united with t
. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 187 sionally be noted, such as the development of gametospores in either filament or the fusion of the adjacent cells of a filament by means of lateral tubular outgrowth. In other genera, there is a considerable modification in the process, as in some species of Zygnema, where the fusion is effected in the middle of the Fig. 107. Sexual reproduction of Spirogyra: A, in lower portion of figure the formation of the tubes between the opposite cells of the filaments is shown. Above the contents of two cells have united with two cells of another filament, forming two gametospores. B, germination of a gametospore. This is only a different form of the sexual process with which you are familiar, the difference being, that but one gamete is formed in each cell and these bodies are motionless or at least not provided with cilia and do not escape from the mother plant. When the fusion of the gametes has been effected the resulting. 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 Curtis, Carlton Clarence, 1864-1945. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
