. The botany of crop plants : a text and reference book. Botany, Economic. rUNDAMENTAL INTERNAL STRUCTUIiE OI' PLANT BODY 7 These spaces are called vacuoles. However, one must not think of the cell-sap spaces in the protoplasm as vacuums, as the rather inappropriate name "vacuole" may suggest. Vacuoles are numerous and small in the young cells, but as. Fig. I.—A, young cells from oruMi'foot tip; d, protoplasmic membrane; c, cytoplasm; a, nuclear membrane; Sj nucleolus; e, plastids (black dots). B, older cells farther back from the root tip; /, vacuole; note that the cells have enlarg
. The botany of crop plants : a text and reference book. Botany, Economic. rUNDAMENTAL INTERNAL STRUCTUIiE OI' PLANT BODY 7 These spaces are called vacuoles. However, one must not think of the cell-sap spaces in the protoplasm as vacuums, as the rather inappropriate name "vacuole" may suggest. Vacuoles are numerous and small in the young cells, but as. Fig. I.—A, young cells from oruMi'foot tip; d, protoplasmic membrane; c, cytoplasm; a, nuclear membrane; Sj nucleolus; e, plastids (black dots). B, older cells farther back from the root tip; /, vacuole; note that the cells have enlarged. C, epidermal cell of Tradescantia zebrina; in its natural condition of the right, and, on the left with the protoplast drawn from the cell wall as the result of immersing the cell in a solution the concentration of which is greater than that of the cell sap. This phenomenon is called plasmolysis. g, contains the plasmolyzing solution. (After Stevens.) the cell ages, they coalesce to form larger spaces. In some instances, there is one large central vacuole, while the cyto- plasm and nucleus are squeezed out close to the cell 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 Robbins, Wilfred William, 1884-1952. Philadelphia : P. Blakiston's Son
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
