The Evolution of Plant Life: Lower FormsMethuen & Company, 1891 - 242 pages |
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Page 26
... occur in the external cells of leaves , branches , etc. , which are growing in the air , the object being to prevent the loss by evapora- tion of the water contained in the tissues of such structures ; finally , the whole , or a portion ...
... occur in the external cells of leaves , branches , etc. , which are growing in the air , the object being to prevent the loss by evapora- tion of the water contained in the tissues of such structures ; finally , the whole , or a portion ...
Page 30
... occur in the above - mentioned outer layer or strands of protoplasm , and is rendered apparent by the movements of enclosed granules ; such currents often move in opposite directions in the same slender strand . The term Rotation is ...
... occur in the above - mentioned outer layer or strands of protoplasm , and is rendered apparent by the movements of enclosed granules ; such currents often move in opposite directions in the same slender strand . The term Rotation is ...
Page 32
... occur , the most remarkable being the primordial or naked cell , so called on account of the entire absence of the cell - wall . Such cells are only met with in the simplest of the two primary divisions of plants called Cryptogams , and ...
... occur , the most remarkable being the primordial or naked cell , so called on account of the entire absence of the cell - wall . Such cells are only met with in the simplest of the two primary divisions of plants called Cryptogams , and ...
Page 41
... occur in the form of regular octohedra or needle - like crystals , sometimes called raphides . Crystals of phosphate of lime ( Ca ̧2PO1 ) and carbonate of lime ( CaCO3 ) are rare . Metabolism . — The process of Assimilation or the ...
... occur in the form of regular octohedra or needle - like crystals , sometimes called raphides . Crystals of phosphate of lime ( Ca ̧2PO1 ) and carbonate of lime ( CaCO3 ) are rare . Metabolism . — The process of Assimilation or the ...
Page 44
... occurs in the hairs of some flowering plants . Cell - surfaces . The cells combine to form a continuous layer only one cell in thickness . Such membranaceous expansions are met with in some alg¿ , also in 44 PLANT LIFE .
... occurs in the hairs of some flowering plants . Cell - surfaces . The cells combine to form a continuous layer only one cell in thickness . Such membranaceous expansions are met with in some alg¿ , also in 44 PLANT LIFE .
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Common terms and phrases
alga alg¿ 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 hyph¿ 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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