Synopses & Reviews
Synopsis
Excerpt from A Text-Book of Materia Medica: Including Laboratory Exercises in the Histologic and Chemic Examinations of Drugs Pharmaceutic and Medical Schools and for Home Study
The root is most concisely defined as that part of the plant axis (the stem being the other part) which bears neither leaves nor any leaf modifications. It usually con stitutes the underground portion, its office being to absorb moisture and salts from the earth and to conduct them toward the leaves; and, further, to maintain the plant in a fixed position. In addition to this it may, in special cases, perform other functions, such as serving as a storehouse for reserve material. This is especially conspicuous with tuber ous roots, but occurs to a lesser degree with many ordinary roots. On the other hand, rhizomes - which are really underground stems - Often perform a part of the Office Of roots in that they serve to maintain the plant in a fixed position.
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