Physiological Botany: An Abridgement of The Students' Guide to Structural, Morphological, and Physiological BotanyD. Appleton and Company, 1886 - 292 páginas |
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Página xii
... Formation of Cells A. Free Cell - formation B. Cell - division • ( 2 ) Absorption and Transmission of Fluids ( 3 ) Movements of the Cell - contents • 194 194 • 194 195 . 196 . 199 . 201 ( 4 ) Elaboration of the Cell - contents 2 ...
... Formation of Cells A. Free Cell - formation B. Cell - division • ( 2 ) Absorption and Transmission of Fluids ( 3 ) Movements of the Cell - contents • 194 194 • 194 195 . 196 . 199 . 201 ( 4 ) Elaboration of the Cell - contents 2 ...
Página 4
... formation of seed , and are hence termed organs of reproduction . On the contrary , a spore merely consists of a single cell , or of two or more united , and never exhibits any distinction of parts until it begins to develop in the ...
... formation of seed , and are hence termed organs of reproduction . On the contrary , a spore merely consists of a single cell , or of two or more united , and never exhibits any distinction of parts until it begins to develop in the ...
Página 9
... formation of chlorophyl ; and when so colored they have the power of breaking up the carbon dioxide of the air or the water in which the plant is growing , and , returning the oxygen to the air , re- tain the carbon , which they are ...
... formation of chlorophyl ; and when so colored they have the power of breaking up the carbon dioxide of the air or the water in which the plant is growing , and , returning the oxygen to the air , re- tain the carbon , which they are ...
Página 40
... different plants . It is usually small in hard- wooded plants , as ebony , and large in soft - wooded ones , as elder . ( 2 ) The Medullary Sheath , as seen in Figs . 90 , 91 , is FORMATION OF WOOD . 4I not continuous around the pith.
... different plants . It is usually small in hard- wooded plants , as ebony , and large in soft - wooded ones , as elder . ( 2 ) The Medullary Sheath , as seen in Figs . 90 , 91 , is FORMATION OF WOOD . 4I not continuous around the pith.
Página 41
... FORMATION OF WOOD . 4I not continuous around the pith , but spaces are left through which the medullary rays pass outward . ( 3 ) The Wood or Xylem.- Figs . 85 , 90 , begins its development by the formation of the spiral vessels forming ...
... FORMATION OF WOOD . 4I not continuous around the pith , but spaces are left through which the medullary rays pass outward . ( 3 ) The Wood or Xylem.- Figs . 85 , 90 , begins its development by the formation of the spiral vessels forming ...
Otras ediciones - Ver todas
The Student's Guide to Structural, Morphological and Physiological Botany Robert Bentley Sin vista previa disponible - 2016 |
The Student's Guide to Structural, Morphological and Physiological Botany Robert Bentley Sin vista previa disponible - 2016 |
Términos y frases comunes
absorption æstivation albumen anther antheridia antherozoids apex appearance archegonia arranged axil bark base becomes bracts branches buds called calyx carbon dioxide carpels cavity cell-wall cells Fig cellular chalaza chlorophyl coat color commonly compound consists contain corolla cotyledons cyme dehiscence described developed Dicotyledonous dissepiments elongated embryo embryo-sac epidermis external fertilization fibro-vascular bundles filaments fleshy floral flower-buds flowers fluid frequently fruit glands granules green grow growth hairs hence hilum inclosed indehiscent inflorescence inner kind layer leaf leaves less lobes matters medullary membrane micropyle Monocotyledonous nature nucleus occur organs outer ovary ovule oxygen parenchyma pericarp petals petiole pistil pith pitted placenta plants pollen pollen-cells portion primary axis produced protoplasm radicle reproductive roots seeds sepals species spiral vessels sporangium spores stalk stamens starch stem stigma stomata structure style substance surface sutures takes place termed terminal thalamus Thallophytes thickened tion tissue transverse usually valves vary walls whorls wood wood-cells
Pasajes populares
Página ii - Society, etc.; and JB HOLDER, MD, Curator of Zoology of American Museum of Natural History, Central Park, New York. 12mo, 385 pages. A COMPEND OF GEOLOGY. By JOSEPH LE CONTE, Professor of Geology and Natural History in the University of California; author of "Elements of Geology,
Página 223 - ... bundles ; or the increased size of the coming leaf-bud will snap them ; or if these causes are not in operation, a gust of wind, a heavy shower, or even the simple weight of the lamina, will be enough to disrupt the small connexions, and send the suicidal member to its grave. " Such is the history of the fall of the leaf.
Página vi - Descriptive Botany," by Eliza A. Youmans. Designed to give an elementary account of Structural and Physiological Botany, or of the inner and minute mechanism and activities of plants. It treats of what the parts of a plant are built up, and what functions they perform In its history as a living being.