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 1
... ( see page 21 ) , which lie upon the surface of the substance fur- nishing the plants with food ; while those destined to re- produce the individual , which are called spores , are devel- 2 MOLDS - THALLOPHYTES . oped in globular cavities (
... ( see page 21 ) , which lie upon the surface of the substance fur- nishing the plants with food ; while those destined to re- produce the individual , which are called spores , are devel- 2 MOLDS - THALLOPHYTES . oped in globular cavities (
Página 7
... surface of the plant , have the various markings on their outer or free surface , while those that are united to form tissues have them on the internal surface of their cell - wall . The former is termed centrifugal thickening ; the ...
... surface of the plant , have the various markings on their outer or free surface , while those that are united to form tissues have them on the internal surface of their cell - wall . The former is termed centrifugal thickening ; the ...
Página 14
... surface , we have cells which maintain a rounded form in the center , but with rays projecting from them in various directions , by which they acquire a more or less star - like FORMS OF CELLS . 15 or irregular appearance . Hence.
... surface , we have cells which maintain a rounded form in the center , but with rays projecting from them in various directions , by which they acquire a more or less star - like FORMS OF CELLS . 15 or irregular appearance . Hence.
Página 15
... surfaces parallel , or nearly so . Of those cells which are ex- FIG . 26 . FIG . 27 . tended in length or verti- cally , we have such forms as the cylindrical ( Fig . 27 ) and fusiform ( Fig . 28 ) ; and these , by the mutual press- ure ...
... surfaces parallel , or nearly so . Of those cells which are ex- FIG . 26 . FIG . 27 . tended in length or verti- cally , we have such forms as the cylindrical ( Fig . 27 ) and fusiform ( Fig . 28 ) ; and these , by the mutual press- ure ...
Página 17
... surface . A section of one of these cells gives an appearance as if the walls had been formed by concentric layers of cellulose with branching capillary tubes or canals stretching from the cavity of the cell to its periphery ( Fig . 31 ) ...
... surface . A section of one of these cells gives an appearance as if the walls had been formed by concentric layers of cellulose with branching capillary tubes or canals stretching from the cavity of the cell to its periphery ( Fig . 31 ) ...
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
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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.