Physiological Botany: An Abridgement of The Students' Guide to Structural, Morphological, and Physiological BotanyD. Appleton and Company, 1886 - 292 páginas |
Dentro del libro
Resultados 1-5 de 69
Página 1
... consist of a single membranous sac , or cell , as it is termed , which in form is more or less spherical or oval . In plants immediately above these in point of complexity we find the cells still all alike , but , instead of being sepa ...
... consist of a single membranous sac , or cell , as it is termed , which in form is more or less spherical or oval . In plants immediately above these in point of complexity we find the cells still all alike , but , instead of being sepa ...
Página 4
... 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 ordinary process of vegetation , and then only in certain cases , when a special apparatus appears ...
... 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 ordinary process of vegetation , and then only in certain cases , when a special apparatus appears ...
Página 5
... consists only of a naked mass of a semi - fluid substance to which the name of protoplasm has been given , in the midst of which is a nucleus . In a few cases the cell remains in this con- dition , and is then termed a primordial cell ...
... consists only of a naked mass of a semi - fluid substance to which the name of protoplasm has been given , in the midst of which is a nucleus . In a few cases the cell remains in this con- dition , and is then termed a primordial cell ...
Página 6
... consists of nucleated protoplasm alone - or that , in other words , it has no cell- wall . As a general rule , however , this condition of things CELL - WALL - PROTOPLASM . 7 very shortly disappears. Hepaticaceæ or Liverworts.
... consists of nucleated protoplasm alone - or that , in other words , it has no cell- wall . As a general rule , however , this condition of things CELL - WALL - PROTOPLASM . 7 very shortly disappears. Hepaticaceæ or Liverworts.
Página 20
... consists of stellate cells ( Fig . 38 ) , or of cells with an irregular outline pro- duced by projecting rays , and in contact only by the ex- tremities of such rays , so as to leave large irregular spaces between them ( Fig . 56 , c ) ...
... consists of stellate cells ( Fig . 38 ) , or of cells with an irregular outline pro- duced by projecting rays , and in contact only by the ex- tremities of such rays , so as to leave large irregular spaces between them ( Fig . 56 , c ) ...
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.