Handbook of Practical Botany
Handbook of Practical Botany
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In our eReader you can find the full English version of the book. Read Handbook of Practical Botany Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Handbook of Practical Botany
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As results from the foregoing relations, the root of Thuja possesses no epidermis, the outer surface of the root is composed of the, for the time being, outermost layer of the periblem. If such a layer is followed in the direction of the apex, we shall soon see it pass under another, which for a time pro- vides a surface. The outermost living layers of cells are protected at their surface by the collapsed walls (become brown) of the disorganized layers of cells. The roots of the Gymnosperms hav...e, in general, no root-hairs; we search for such in vain in Thuja occidental™. The adjoining figure, 70, gives, with low magnification, Digitized by Google 187 THE ROOT-APEX OF CONIFERS.
the structure of a longitudinal section, and can facilitate our obtaining information about it. Naturally, the arrangement of the cells can only be indicated with such a low magnification. Pass- ing from the exterior towards the interior, we see, therefore, the brown, collapsed covering of cells (x) ; then the periblem (pr)> which can be traced over the apex of the root, and whose outer- most layers, therefore, form the root-cap ; lastly, the plerome (pi), the termination of which is not quite clear with low magnification.
What to read after Handbook of Practical Botany?
You can find similar books in the "Read Also" column, or choose other free books by Strasburger, Eduard, 1844-1912 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
As results from the foregoing relations, the root of Thuja possesses no epidermis, the outer surface of the root is composed of the, for the time being, outermost layer of the periblem. If such a layer is followed in the direction of the apex, we shall soon see it pass under another, which for a time pro- vides a surface. The outermost living layers of cells are protected at their surface by the collapsed walls (become brown) of the disorganized layers of cells. The roots of the Gymnosperms hav...e, in general, no root-hairs; we search for such in vain in Thuja occidental™. The adjoining figure, 70, gives, with low magnification, Digitized by Google 187 THE ROOT-APEX OF CONIFERS.
the structure of a longitudinal section, and can facilitate our obtaining information about it. Naturally, the arrangement of the cells can only be indicated with such a low magnification. Pass- ing from the exterior towards the interior, we see, therefore, the brown, collapsed covering of cells (x) ; then the periblem (pr)> which can be traced over the apex of the root, and whose outer- most layers, therefore, form the root-cap ; lastly, the plerome (pi), the termination of which is not quite clear with low magnification.
What to read after Handbook of Practical Botany?
You can find similar books in the "Read Also" column, or choose other free books by Strasburger, Eduard, 1844-1912 to read onlineMoreLess
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