. Plant life, considered with special references to form and function. Plant physiology. PLANT LIFE. are characteristic of special cliaiiges which the wall may undergo. The most noticeable changes are four: (i) Some cell-walls contain suberin or cutin, fat-like substances by the presence of which water and gases are hindered from passing 1 J/l. Fig. 8. Fig. g. Fig. S.—1, chromoplasts from flower-leaves of an orchid; II, from the root of carrot; III, from the fruit of mountain-ash. Embedded in the protoplasmic body of the chromoplast are sometimes proteid pigment-crystals, y&quo
. Plant life, considered with special references to form and function. Plant physiology. PLANT LIFE. are characteristic of special cliaiiges which the wall may undergo. The most noticeable changes are four: (i) Some cell-walls contain suberin or cutin, fat-like substances by the presence of which water and gases are hindered from passing 1 J/l. Fig. 8. Fig. g. Fig. S.—1, chromoplasts from flower-leaves of an orchid; II, from the root of carrot; III, from the fruit of mountain-ash. Embedded in the protoplasmic body of the chromoplast are sometimes proteid pigment-crystals, y", or starch- grains, s. Magnified about looo diam.—After Schimper. Fjg. g. —Chromoplasts from the flesh-colored shoots of the horsetail, containing the coloring matter in the form of granules embedded in colorless protoplasm. ^lag- nified 1400 diam.—After Zimmermann. through. The cell-walls of bottle-cork are suberized^ and those in the skin of the apple are cuimized. (2) Some cell- walls are lignified, as, for exanijile, those of wood by reason of. 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 Barnes, Charles Reid, 1858-1910. New York, H. Holt & company
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectplantphysiology
