The Evolution of Plant Life: Lower FormsMethuen & Company, 1891 - 242 pages |
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Page 7
... minute mass of proto- plasm furnished with one or two cilia or slender hair - like prolongations which act as organs of locomotion , propelling the antherozoid through water at a rapid rate , or in the more sluggish movement of the ...
... minute mass of proto- plasm furnished with one or two cilia or slender hair - like prolongations which act as organs of locomotion , propelling the antherozoid through water at a rapid rate , or in the more sluggish movement of the ...
Page 21
... minute portions , for the most part invisible to the unaided eye . These minute fundamental parts are called cells , and it is important to remember that every variety of form and texture , as also the various colours , secretions ...
... minute portions , for the most part invisible to the unaided eye . These minute fundamental parts are called cells , and it is important to remember that every variety of form and texture , as also the various colours , secretions ...
Page 23
... minute as to be invisible to the naked eye . The last example illustrates the great amount of differentia- tion and division of labour that a single cell is capable of 44 undergoing . From geological evidence it would appear that these.
... minute as to be invisible to the naked eye . The last example illustrates the great amount of differentia- tion and division of labour that a single cell is capable of 44 undergoing . From geological evidence it would appear that these.
Page 24
... minute and very large seaweeds consisted in the relative size and differentiation of a single cell rather than in the aggregation of numerous individually minute cells as is usual at the present day ; although we have yet a small ...
... minute and very large seaweeds consisted in the relative size and differentiation of a single cell rather than in the aggregation of numerous individually minute cells as is usual at the present day ; although we have yet a small ...
Page 30
... minute drops known as vacuoles in the central mass of protoplasm . As the cell grows these vacuoles increase in size , until eventually the protoplasm forms a sac or layer , lining the cell - wall , and filled with watery sap . The ...
... minute drops known as vacuoles in the central mass of protoplasm . As the cell grows these vacuoles increase in size , until eventually the protoplasm forms a sac or layer , lining the cell - wall , and filled with watery sap . The ...
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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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