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
... elongated cells , which are , to a certain extent , thickened , and differ little from the true wood - cells met with in higher plants . Still ascending , we find in the Club - mosses , Pepper - worts , Horse- tails , and Ferns , a ...
... elongated cells , which are , to a certain extent , thickened , and differ little from the true wood - cells met with in higher plants . Still ascending , we find in the Club - mosses , Pepper - worts , Horse- tails , and Ferns , a ...
Página 15
... 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 ) , that is , six - sided flattened cells , with the upper and lower ...
... 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 ) , that is , six - sided flattened cells , with the upper and lower ...
Página 17
... elongated . III . General Properties and Structure of the Cell - wall . As the cell - wall increases in age it becomes thickened , as we have seen ( page 7 ) , by the incorporation . of new matter into its substance , and then ...
... elongated . III . General Properties and Structure of the Cell - wall . As the cell - wall increases in age it becomes thickened , as we have seen ( page 7 ) , by the incorporation . of new matter into its substance , and then ...
Página 20
... Elongated Parenchyma : this is composed of cells elongated in a longitudinal direction , so as to become fusi- form , cylindrical , or prismatic , and closely compacted . It occurs frequently in the stems of Monocotyledonous plants ...
... Elongated Parenchyma : this is composed of cells elongated in a longitudinal direction , so as to become fusi- form , cylindrical , or prismatic , and closely compacted . It occurs frequently in the stems of Monocotyledonous plants ...
Página 22
... elongated and tapering to their extremities , their walls being much thickened ( Fig . 40 ) , and when FIG . 40 . FIG . 41 . FIG . 42 . FIG . 40. - Prosenchymatous or wood- cells . FIG . 41. - Transverse section of Prosenchymatous cells ...
... elongated and tapering to their extremities , their walls being much thickened ( Fig . 40 ) , and when FIG . 40 . FIG . 41 . FIG . 42 . FIG . 40. - Prosenchymatous or wood- cells . FIG . 41. - Transverse section of Prosenchymatous cells ...
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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.