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 3
... appearance for the first time ; and the stems of Ferns are frequent- ly of considerable size and height . FIG . 6. - A portion of the flat thalloid stem of Marchan- tia polymorpha , showing an antheridial receptacle , r , supported on a ...
... appearance for the first time ; and the stems of Ferns are frequent- ly of considerable size and height . FIG . 6. - A portion of the flat thalloid stem of Marchan- tia polymorpha , showing an antheridial receptacle , r , supported on a ...
Página 5
... appearance and struct- ure , are also made up of these simple bodies variously modified and combined together . The cell is therefore . the only elementary organ possessed by a plant ; and hence necessarily requires our first and ...
... appearance and struct- ure , are also made up of these simple bodies variously modified and combined together . The cell is therefore . the only elementary organ possessed by a plant ; and hence necessarily requires our first and ...
Página 6
... appearance in it ; and the nucleus , k ' , is then suspended in the cell and connected to the protoplasm lining its inner wall , by slender threads or bands of the same substance , p ' , p ' . As the cell continues to enlarge , these ...
... appearance in it ; and the nucleus , k ' , is then suspended in the cell and connected to the protoplasm lining its inner wall , by slender threads or bands of the same substance , p ' , p ' . As the cell continues to enlarge , these ...
Página 7
... appearance of protoplasm is as varied as is the form of the cells which it produces . It may be granular and opaque , or homogeneous and transparent ; it may be almost fluid , or of the consistency of dough ; or again it may be stiff ...
... appearance of protoplasm is as varied as is the form of the cells which it produces . It may be granular and opaque , or homogeneous and transparent ; it may be almost fluid , or of the consistency of dough ; or again it may be stiff ...
Página 9
... appearance . Its chemical composition , owing to the great difficulty there is of obtaining it pure , is not accurately known ; but there seems much reason to be- lieve that it is closely allied to wax . Chlorophyl does not commonly ...
... appearance . Its chemical composition , owing to the great difficulty there is of obtaining it pure , is not accurately known ; but there seems much reason to be- lieve that it is closely allied to wax . Chlorophyl does not commonly ...
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.