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 8
... growth of the cell . In the earlier stages of the cell's life , as we have already seen , the cell - sap as a sub- stance distinct from the protoplasm does not occur , but is diffused generally through it and the cell - wall , and it is ...
... growth of the cell . In the earlier stages of the cell's life , as we have already seen , the cell - sap as a sub- stance distinct from the protoplasm does not occur , but is diffused generally through it and the cell - wall , and it is ...
Página 12
... growth then takes place round each , com- pound granules are formed . Starch is insoluble in cold water , alcohol , ether , and oils . By the action of boiling water it swells up and forms a mucilage or paste ; and , if to this when ...
... growth then takes place round each , com- pound granules are formed . Starch is insoluble in cold water , alcohol , ether , and oils . By the action of boiling water it swells up and forms a mucilage or paste ; and , if to this when ...
Página 14
... growth becomes active in the process of germination , in the same way that starch and oily matters are reservoirs of hydrocarbons for use in a like manner . II . Forms and Sizes of Cells . - When growth is uniform , or nearly so , on ...
... growth becomes active in the process of germination , in the same way that starch and oily matters are reservoirs of hydrocarbons for use in a like manner . II . Forms and Sizes of Cells . - When growth is uniform , or nearly so , on ...
Página 15
... growth takes place chiefly in one direction , we have cells which are elongated , either hori- zontally or vertically . Among the forms resulting from an extension of the cell in a horizontal direction , we have tabular cells ( Fig . 26 ) ...
... growth takes place chiefly in one direction , we have cells which are elongated , either hori- zontally or vertically . Among the forms resulting from an extension of the cell in a horizontal direction , we have tabular cells ( Fig . 26 ) ...
Página 34
... growth of their outer portions . c . Receptacles of Secretion . - In many plants , again , the intercellular canals or spaces act as receptacles for the peculiar secretions of the plant ; in which case they are termed Receptacles of ...
... growth of their outer portions . c . Receptacles of Secretion . - In many plants , again , the intercellular canals or spaces act as receptacles for the peculiar secretions of the plant ; in which case they are termed Receptacles of ...
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.