. Botany, an elementary text for schools. Botany. ROOT STEUCTUEE 65 germinate radish or other seed, so that no delicate parts of the root will be injured. For this purpose, place a few seeds iu packing-moss or in the folds of cloth or blotting paper, being careful to ^ keep them moist. In a few daj's the seed has germinated, and the root has grown an inch or two long. Notice that, excepting at a distance of about a quarter of an inch behind the tip, the root is covered with minute hairs (Figs. 11, 104). They are actu- ally hairs, that is, root-hairs. Touch them and they collapse, the}* are fc.
. Botany, an elementary text for schools. Botany. ROOT STEUCTUEE 65 germinate radish or other seed, so that no delicate parts of the root will be injured. For this purpose, place a few seeds iu packing-moss or in the folds of cloth or blotting paper, being careful to ^ keep them moist. In a few daj's the seed has germinated, and the root has grown an inch or two long. Notice that, excepting at a distance of about a quarter of an inch behind the tip, the root is covered with minute hairs (Figs. 11, 104). They are actu- ally hairs, that is, root-hairs. Touch them and they collapse, the}* are delicate. Dip one of the plants in water, and when removed the hairs are not to be seen. The water mats them together along the root and they are no longer evident. Hoot-hairs usually are destroyed when a plant is pulled out of llir soil, be it done ever so carefully. TliL'y cling to the minute particles of soil. Under a microscope, observe how they an- Hat trued when they come in contact with grains of sand (('liaptd- II). These roof-hairs clofhr the i/oinif/ roofh fs, aII<l a great amount oi soil is thus brought into actual contact with the plant. Hool-hairs ori no/ ijoiitnj roots: theij soon (In. 138. The rootlet ami the root-hair di/hr. The i-ootlct is a solid, compact structure. Th< root-hair is a delicate tube (I'ig. ]^^')) , leit h ill till cill-irall of irhieh is coiitaiiuil liriiif/ iiiatli r {/iri'/niihisni ) ; ami I In liiiiinj iin iiihrane of this leall /iiriiii/s irn/i r and siilistanees in solution to fiass ill. lii'iiig \(<\\\- taking-- iu the larj^'est (piantilv ol' snlu-. 104 Root of ptimpkii seedling, showing tin eoveriug of root-hairs. 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York Macmillan
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
