The Evolution of Plant Life: Lower FormsMethuen & Company, 1891 - 242 pages |
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Page 35
... divided into several daughter - cells , which escape from the mother - cell as primordial cells , and exhibit spon- taneous movements due to the presence of cilia . Such cells , if possessed of sexual functions , either always remain ...
... divided into several daughter - cells , which escape from the mother - cell as primordial cells , and exhibit spon- taneous movements due to the presence of cilia . Such cells , if possessed of sexual functions , either always remain ...
Page 49
... half of which constitutes the mother - cell . This mother - cell is then divided by a wall into two equal parts or cells , termed the guard - cells of the stoma . E Finally the wall formed between the two guard - cells EPIDERMIS . 49.
... half of which constitutes the mother - cell . This mother - cell is then divided by a wall into two equal parts or cells , termed the guard - cells of the stoma . E Finally the wall formed between the two guard - cells EPIDERMIS . 49.
Page 59
... large , irregular , intercellular spaces ; k , cells containing crystals ; k ' , a cell containing a cluster - crystal . ( From Strasburger . ) may be divided into three zones , characterized as follows LEAF STRUCTURE . 59.
... large , irregular , intercellular spaces ; k , cells containing crystals ; k ' , a cell containing a cluster - crystal . ( From Strasburger . ) may be divided into three zones , characterized as follows LEAF STRUCTURE . 59.
Page 60
Lower Forms George Massee. may be divided into three zones , characterized as follows . At the extreme tip new cells are being formed by division ; below this the newly formed cells rapidly increase in size ; still further back , the ...
Lower Forms George Massee. may be divided into three zones , characterized as follows . At the extreme tip new cells are being formed by division ; below this the newly formed cells rapidly increase in size ; still further back , the ...
Page 86
... divided into two groups , based on the mode of reproduction . Endosporous Bacteria reproduce themselves by spores formed within the cells ; Arthrosporcus Bacteria do not form spores , but reproduce themselves by breaking up of the rods ...
... divided into two groups , based on the mode of reproduction . Endosporous Bacteria reproduce themselves by spores formed within the cells ; Arthrosporcus Bacteria do not form spores , but reproduce themselves by breaking up of the rods ...
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Common terms and phrases
alga algæ antheridia antherozoids apex apical cell aquatic archegonia asexual mode asexual reproductive axial basidia bearing become belonging branches called carbonic carpogonium cavity cell-division cell-wall cellulose chlorophyll cilia colour colourless conceptacles condition conjugation consists containing Crown 8vo Cryptogams daughter-cells differentiation divided division enclosed epidermis eventually ferns fertilization fibro-vascular bundles filaments flowering formation fungi fungus furnished genera genus germination give origin grow hymenium hypha hyphæ individual known latter leaf leaves lichens mass megaspores minute mode of reproduction mother-cell motile mycelium numerous oogonia oogonium oophore oosphere parasitic peridium Phanerogams phloem pileus plants Prantl present group produced prothallus protoplasm remains reproductive bodies resting-spores roots septa septum sexual mode sexual organs sexual reproduction single slender species spiral sporangia sporangium spores sporidiola sporocarp sporophore starch stem stomata structure substance superposed cells surface thallus thick thickened tissue transverse trichogyne unicellular usually vascular bundles vegetative portion wall xylem zoospores zygospore
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