The Evolution of Plant Life: Lower FormsMethuen & Company, 1891 - 242 pages |
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Page
... Life - Transition from Uni- cellular through Cell Colonies to Multicellular Plants- Earliest Indications of Sexual Reproduction - Terminal Groups of Protophytes - Alge Proper- Gradual Differentiation of Vegetative and Reproductive.
... Life - Transition from Uni- cellular through Cell Colonies to Multicellular Plants- Earliest Indications of Sexual Reproduction - Terminal Groups of Protophytes - Alge Proper- Gradual Differentiation of Vegetative and Reproductive.
Page
... Differentiation of Tissues - Epidermis and Stomata — Bilateral Structure - Appearance of an erect Stem bearing Leaves - Spore Structure and Ornamentation - Habitats - Fossil Forms ... p . 199 CHAPTER VII . PTERIDOPHYTA . General ...
... Differentiation of Tissues - Epidermis and Stomata — Bilateral Structure - Appearance of an erect Stem bearing Leaves - Spore Structure and Ornamentation - Habitats - Fossil Forms ... p . 199 CHAPTER VII . PTERIDOPHYTA . General ...
Page 21
... differentiation in cells . The term cell implies a closed vesicle , and conse- quently clearly expressed the idea entertained by the early botanists as to the structure of this organ , but at the present day many fundamental parts are ...
... differentiation in cells . The term cell implies a closed vesicle , and conse- quently clearly expressed the idea entertained by the early botanists as to the structure of this organ , but at the present day many fundamental parts are ...
Page 24
... 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 remnant of this antiquated group of large unicellular forms ...
... 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 remnant of this antiquated group of large unicellular forms ...
Page 30
... differentiation usually commences by the formation of an external , firmer , very thin layer , which is in intimate contact with the central mass ; the cell sap , that is , water containing substances in solution which permeates the ...
... differentiation usually commences by the formation of an external , firmer , very thin layer , which is in intimate contact with the central mass ; the cell sap , that is , water containing substances in solution which permeates 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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