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
... usually presents a more or less rounded outline , and contains one ( Fig . 8 , c ) , two ( Fig . 9 , k ' , k ' ) , or more , much smaller bodies , called nucleoli . It is always situated in , and more or less inclosed by , the ...
... usually presents a more or less rounded outline , and contains one ( Fig . 8 , c ) , two ( Fig . 9 , k ' , k ' ) , or more , much smaller bodies , called nucleoli . It is always situated in , and more or less inclosed by , the ...
Página 10
... usually the case ( Fig . 10 ) , or more or less combined together so as to form compound granules . In form the separate granules are always spherical or nearly so in their earliest condition . In some cases this form is nearly ...
... usually the case ( Fig . 10 ) , or more or less combined together so as to form compound granules . In form the separate granules are always spherical or nearly so in their earliest condition . In some cases this form is nearly ...
Página 13
... usually found in the cavities of the cells , but they also occur in their walls , as the cell walls of the Coniferæ and Gnetaceæ . · When found in the interior of cells , they either occur singly , as in the inner bark of the Locust ...
... usually found in the cavities of the cells , but they also occur in their walls , as the cell walls of the Coniferæ and Gnetaceæ . · When found in the interior of cells , they either occur singly , as in the inner bark of the Locust ...
Página 16
... usually thin ( Fig . 27 ) , while those of prosenchymatous cells are more or less thickened ( Figs . 40 and 41 ) . These latter cells are commonly termed fibers . The cells vary much in size in different plants , and in the various ...
... usually thin ( Fig . 27 ) , while those of prosenchymatous cells are more or less thickened ( Figs . 40 and 41 ) . These latter cells are commonly termed fibers . The cells vary much in size in different plants , and in the various ...
Página 28
... usually contain some chlorophyl grains . There are gener- aily but two cells surrounding the orifice , and these , which STOMATA . 29 are usually termed guard - cells ,
... usually contain some chlorophyl grains . There are gener- aily but two cells surrounding the orifice , and these , which STOMATA . 29 are usually termed guard - cells ,
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.