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 vii
... already given in full in the " Descriptive Botany , " where they properly belong in the present course of botanical study . While in descriptive botany the properties and relations of the organs of plants must be learned by direct ...
... already given in full in the " Descriptive Botany , " where they properly belong in the present course of botanical study . While in descriptive botany the properties and relations of the organs of plants must be learned by direct ...
Página 7
... already seen , is the only part of the cell , and therefore of the whole plant , which is possessed of life ; and the differences in the form , size , and nature of cells are due to the vital energy which this protoplasm is capable of ...
... already seen , is the only part of the cell , and therefore of the whole plant , which is possessed of life ; and the differences in the form , size , and nature of cells are due to the vital energy which this protoplasm is capable of ...
Página 8
... already been observed , is the thin layer of protoplasm which lines the cell - wall and forms the boundary of the central cavity filled with cell - sap . It is frequently so thin and transpar- ent that it can not be detected without the ...
... already been observed , is the thin layer of protoplasm which lines the cell - wall and forms the boundary of the central cavity filled with cell - sap . It is frequently so thin and transpar- ent that it can not be detected without the ...
Página 52
... already briefly noticed ( see page 37 ) , the following parts : Thus in the center , when young , a mass of parenchyma ( Fig . 87 , m ) , the cells of which have thin walls ; but in old stems this central parenchyma is destroyed , so ...
... already briefly noticed ( see page 37 ) , the following parts : Thus in the center , when young , a mass of parenchyma ( Fig . 87 , m ) , the cells of which have thin walls ; but in old stems this central parenchyma is destroyed , so ...
Página 53
... already seen that the presence of leaves and leaf - buds is the essential characteristic by which a stem may be distinguished from a root . The leaves will be treated of hereafter , but we have now to describe the nature of leaf - buds ...
... already seen that the presence of leaves and leaf - buds is the essential characteristic by which a stem may be distinguished from a root . The leaves will be treated of hereafter , but we have now to describe the nature of leaf - buds ...
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.