Plant Life And Plant Uses; An Elementary Textbook, a Foundation for the Study of Agriculture, Domestic Science Or College Botany
The book Plant Life And Plant Uses; An Elementary Textbook, a Foundation for the Study of Agriculture, Domestic Science Or College Botany was written by author Coulter, John G. (John Gaylord), B. 1876 Here you can read free online of Plant Life And Plant Uses; An Elementary Textbook, a Foundation for the Study of Agriculture, Domestic Science Or College Botany book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Plant Life And Plant Uses; An Elementary Textbook, a Foundation for the Study of Agriculture, Domestic Science Or College Botany a good or bad book?
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Of the new cells thus formed, those on the inner side of the cyhnder enlarge and become wood cells (xylem) ; those on the outer side become cells of the phloem. The new layers of wood, thus formed each season, increase the diameter of the stem, and the cam- bium which formed them is compelled to adjust itself to this constant increase within it. The cambium does this by growth of its cells in length and by some crosswise divisions. Growth on the outside of the cambium is not so great as the gro...wth within it. The cells of the phloem are not so large as those of the xylem. With these facts in mind we can see how it happens that trunks of trees are composed almost wholly of wood ; we can understand how it happens that the cambium lies quite near the surface, just under what is called the inner bark. This inner bark is coinposed of cortex and phloem. The outer bark is composed of tissue called cork, often with dead cortex in addition. This cork is produced by what is called the cork cambium, a layer of cells which I70 STEMS appears in the outer bark, and which forms bark cells only.
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