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Leucoplast Stock Photos and Images
RF2A666W4–Cluj-Napoca/Romania-10 24 2019: Medical Adhesive Tapes in cardboard box isolated on white background
RM2CDDR5F–. Nature and development of plants . eUCOplasI as a minute point. Its strati-tic.I structure is due to the successive deposits of starch by theleucoplasts. If the grain is built up equally on all sj,|(s in theleucoplasts it will pos ilar and concentric strata as in the bean (Fig. ti, ./». If the hulk of the leucoplast lies on one side of the -rain, this side of the grain will receive more material and consequently the starch grain will become more or less one- NATURE OF PLANTS 19 sided as in the potato (Fig. II, B). Frequently two or moregrains originate in one leucoplast and compound grains r
RF2A666TW–Cluj-Napoca/Romania-10 24 2019: Medical Adhesive Tapes in cardboard box isolated on white background
RMRE0RRX–. An introduction to vegetable physiology. Plant physiology. THE STOEAGE OF RESERVE MATERIALS 237 along its axis. As the deposition proceeds the leucoplast becomes very much stretched longitudinally, till its centre is reduced to a thin film round the rod of starch, while what is left of its substance is accumulated at the two ends. The further activity of these portions results in the develop- ment of the two heads of the dumb-bell, the thin film connecting them ceasing to deposit any starch along the centre of the rod. It is not very easy to see the leucoplasts in the potato; they can be de-
RMRDYHH8–. An introduction to vegetable physiology. Plant physiology. THE STOEAGE OF EESEEVE MATEEIALS 231 the latter is an elongated structure, and at first forms a rod of starch along its axis. As the deposition proceeds the leucoplast becomes very much stretched longitudinally, till its centre is reduced to a thin film round the rod of starch, while what is left of its substance is accumulated at the two ends. The further activity of these portions results in the development of the two heads of the dumb- bell, the thin film connecting them ceasing to deposit any starch along the centre of the rod. I
RMRE36KM–. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. PROCESS OF STORAGE I85 Sometimes it happens that the starch begins to be deposited at more than one point in the leucoplast, so that two or more rela- tively small grains become closely associated, and adhering with more or less tenacity they constitute a compound grain (Fig. loi). In storage tissues, where simple grains are the rule, com- pound grains may*also occur; and in some instances, as in oats and rice, compound grains are the rule. In some cases small unit
RMRDHC3J–. Outlines of plant life : with special reference to form and function . Botany. D^* Fig. 2. Fig. 3. Fig. 2.—A cell from the interior of the leaf of the oat, showing its wall, and some inclusions of the protoplasm, z, the nucleus; c, chloroplasts; o, an oil-drop. Mag- nified about 1000 diam.—After Zimmermann. Fig. 3.—Part of the cell contents of an inner cell of white potato, z, nucleus ; j, starch grains, each having been formed by a leucoplast, /, which is still attached to one side of the grain; A, crystalloid. Magnified about 1000 diam.—After Zimmermann. formed by the protoplasm. In green
RMRDHC3D–. Outlines of plant life : with special reference to form and function . Botany. D^* Fig. 2. Fig. 3. Fig. 2.—A cell from the interior of the leaf of the oat, showing its wall, and some inclusions of the protoplasm, z, the nucleus; c, chloroplasts; o, an oil-drop. Mag- nified about 1000 diam.—After Zimmermann. Fig. 3.—Part of the cell contents of an inner cell of white potato, z, nucleus ; j, starch grains, each having been formed by a leucoplast, /, which is still attached to one side of the grain; A, crystalloid. Magnified about 1000 diam.—After Zimmermann. formed by the protoplasm. In green
RMRDXRDT–. Plant life, considered with special references to form and function. Plant physiology. - A-. Fic Fig. Fig. 6.—P.^rt of the cell-contents of an inner cell of white potato. 2, nucleus; j, starch-grains, each ha-ing been formed by a leucoplast, /, which is still attached to one side of the grain; k, crystalloid. Magnified abont 1000 diam.—After Zimmer- niann. Fig. 7.—Leucoplasts in place in a young cell of a leaf of vanilla, /, leucoplasts; 2, nucleus; e. an oil-former or elaioplast. The unshaded spaces surrounded by proto- plasm are vacuoles. Magnified about 1000 diam.—After Wakker. of need,
RMRE1T0Y–. Nature and development of plants. Botany. FiG. II. Fig. 12. Fig. II. Starch grains: A, from bean. B, from potato. C, compound grain from potato. Fig. 12. Section of the outer portion of a grain of wheat: ^, cells containing proteid grains. The larger cells are filled with starch.—^After Strasburger. sided as in the potato (Fig. 11, B). Frequently two or more grains originate in one leucoplast and compound grains result (Fig. II, C). Proteids and other foods are likewise transported in solution to the storage organs where they may or may not be deposited in solid form. This is usually effecte
RMRDTHRE–. Nature and development of plants. Botany. FiG. II. Fig. 12. Fig. II. Starch grains: A, from bean. B, from potato. C, compound grain from potato. Fig. 12. Section of the outer portion of a grain of wheat: />, cells containing proteid grains. The larger cells are filled with starch.—After Strasburger. sided as in the potato (Fig. 11, B). Frequently two or more grains originate in one leucoplast and compound grains result (Fig. II, C). Proteids and other foods are likewise transported in solution to the storage organs where they may or may not be deposited in solid form. This is usually effe
Search Results for Leucoplast Stock Photos and Images (33)
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