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 2
... arranged in necklace - like branch- es at the end of special filaments , as in Penicilli- um ( Fig . 4 ) . Yet a little higher in the scale of vegetable life we find the cells so com- bined as to form leaf - life expansions ( Fig . 5 ) ...
... arranged in necklace - like branch- es at the end of special filaments , as in Penicilli- um ( Fig . 4 ) . Yet a little higher in the scale of vegetable life we find the cells so com- bined as to form leaf - life expansions ( Fig . 5 ) ...
Página 15
... to corresponding differences in their arrangement ; thus , in the former case , the cells ( Fig . 16 PARENCHYMA AND PROSENCHYMA . 27 ) are placed one. FIG . 28. - Elongated fusiform cells FIG . 29. - Fibrilliform cells .
... to corresponding differences in their arrangement ; thus , in the former case , the cells ( Fig . 16 PARENCHYMA AND PROSENCHYMA . 27 ) are placed one. FIG . 28. - Elongated fusiform cells FIG . 29. - Fibrilliform cells .
Página 18
... arrangement in the distribution of their fibers . Thus , in spiral cells , the fiber forms an uninterrupted spiral from one end to the other ( Fig . 33 ) . In annular cells the fiber is interrupted at various points , and assumes the ...
... arrangement in the distribution of their fibers . Thus , in spiral cells , the fiber forms an uninterrupted spiral from one end to the other ( Fig . 33 ) . In annular cells the fiber is interrupted at various points , and assumes the ...
Página 20
... arrangement the courses of bricks in a wall ( Fig . 26 ) ; this occurs in the medullary rays of the wood of Dicotyledonous plants . Such are the commoner varieties of parenchyma , all of which are con- cl FIG . 39. - Transverse section ...
... arrangement the courses of bricks in a wall ( Fig . 26 ) ; this occurs in the medullary rays of the wood of Dicotyledonous plants . Such are the commoner varieties of parenchyma , all of which are con- cl FIG . 39. - Transverse section ...
Página 22
... arranged in concentric layers , 42. - Prosenchymatous cells in com- and which are often so numerous as to almost obliterate their cav- bination . ity ( Fig . 41 ) . This kind of tissue occurs in the wood of most trees , except that of ...
... arranged in concentric layers , 42. - Prosenchymatous cells in com- and which are often so numerous as to almost obliterate their cav- bination . ity ( Fig . 41 ) . This kind of tissue occurs in the wood of most trees , except that 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.