Elements of Plant Biology
Elements of Plant Biology
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In our eReader you can find the full English version of the book. Read Elements of Plant Biology 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 Elements of Plant Biology
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(b) Cortex. These cells (Fig. 33, A, c) are larger than those of the palisade layer, having larger vacuoles and fewer phaaoplasts per unit bulk. The nucleus is often suspended in the vacuole by cytoplasmic bridles.
(c) Medulla. The central region of the frond is occupied by cells (Fig. 33, A, me. ) most of which are apparently isolated from one another. They are not, however, separated by air spaces like many of the cells of the tissues of a higher plant, but by a mucila- ginous substance (mu. ...), which is really formed by the swelling of the middle layer of the joint wall between two adjacent cells. When these cells are first formed in development, the cell bodies are separated by thin walls, but the walls gradually increase in thickness and the middle layer becomes mucilaginous, takes up 2l8 DIFFERENTIATION OF TISSUES. FUCUS water and swells, forcing the cells apart and increasing the thickness of the thallus. The layers of wall on each side of this swollen middle layer, i. E. In direct contact with the cell bodies, also increase in thickness, more or less, but remain of firmer consistency, so that in the adult condition the cells appear isolated, each covered by a wall of its own (which may be thin or thick) and separated from its neighbours by a mucila- ginous matrix.
What to read after Elements of Plant Biology?
You can find similar books in the "Read Also" column, or choose other free books by A G Arthur George Tansley to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(b) Cortex. These cells (Fig. 33, A, c) are larger than those of the palisade layer, having larger vacuoles and fewer phaaoplasts per unit bulk. The nucleus is often suspended in the vacuole by cytoplasmic bridles.
(c) Medulla. The central region of the frond is occupied by cells (Fig. 33, A, me. ) most of which are apparently isolated from one another. They are not, however, separated by air spaces like many of the cells of the tissues of a higher plant, but by a mucila- ginous substance (mu. ...), which is really formed by the swelling of the middle layer of the joint wall between two adjacent cells. When these cells are first formed in development, the cell bodies are separated by thin walls, but the walls gradually increase in thickness and the middle layer becomes mucilaginous, takes up 2l8 DIFFERENTIATION OF TISSUES. FUCUS water and swells, forcing the cells apart and increasing the thickness of the thallus. The layers of wall on each side of this swollen middle layer, i. E. In direct contact with the cell bodies, also increase in thickness, more or less, but remain of firmer consistency, so that in the adult condition the cells appear isolated, each covered by a wall of its own (which may be thin or thick) and separated from its neighbours by a mucila- ginous matrix.
What to read after Elements of Plant Biology?
You can find similar books in the "Read Also" column, or choose other free books by A G Arthur George Tansley to read onlineMoreLess
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