Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 15
... examples suffice to show 1 When two organs are united into one whole , the cell exercises two totally different functions . The liver , as we now know , is a double organ consisting of a bile - forming liver , and the glycogen ...
... examples suffice to show 1 When two organs are united into one whole , the cell exercises two totally different functions . The liver , as we now know , is a double organ consisting of a bile - forming liver , and the glycogen ...
Pagina 25
... examples will demonstrate this point : Self - mutilation is a very common phenomenon among Echinoderms . Among ... example of functional evolution ( Romanes ) . With some of these ( the 1 Evolution fonctionnelle du système nerveux . J ...
... examples will demonstrate this point : Self - mutilation is a very common phenomenon among Echinoderms . Among ... example of functional evolution ( Romanes ) . With some of these ( the 1 Evolution fonctionnelle du système nerveux . J ...
Pagina 26
... EXAMPLES : ( a ) The leaves of the water Ranunculus with lacinated leaves ( Ranunculus aquatilis fluitans , etc. ) , are of normal structure when cultivated on dry land . The epidermis is furnished with stomata and the constituent cells ...
... EXAMPLES : ( a ) The leaves of the water Ranunculus with lacinated leaves ( Ranunculus aquatilis fluitans , etc. ) , are of normal structure when cultivated on dry land . The epidermis is furnished with stomata and the constituent cells ...
Pagina 27
... example of this individual adaptation may be obtained by cultivating Cacti alternately in the light and in the dark ... examples of indi- vidual adaptation . The gradual drying up of Lake Aral caused the formation of a number of basins ...
... example of this individual adaptation may be obtained by cultivating Cacti alternately in the light and in the dark ... examples of indi- vidual adaptation . The gradual drying up of Lake Aral caused the formation of a number of basins ...
Pagina 29
... examples abound among animals , especially in the lower zoological groups.1 1 Loeb has shown that in certain groups , when the organism , after having been wounded , is subjected to unusual light , position , or pressure , organs are ...
... examples abound among animals , especially in the lower zoological groups.1 1 Loeb has shown that in certain groups , when the organism , after having been wounded , is subjected to unusual light , position , or pressure , organs are ...
Alte ediții - Afișează-le pe toate
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Termeni și expresii frecvente
adult ancestral stages animals antheridia apical leaves appear appendages aquatic Archaeopteryx assimilative atrophy basilar leaves became become belonging bipinnated blade branches calcaneum canal cells characters chlorophyll collective property colony complete condition consists corporations Crustacea custom degeneration degenerative evolution digits disappeared embryo endopodite epipod exhibited existence exopodite female feudal floating leaves flowers foliage leaves formation formed function gland Huxley hypopod Illustrations individual instance institutions intercentrum land larval Lathyrus Aphaca leaf leaflets limbs male mammals marriage masuirs maxillipede mesonephros metatarsals modern modification muscles normal original pairs petiole phalanges pineal eye plants podite primitive Professor progressive evolution pronephros prothallus protopodite pr reduced regarded remain represent retracing Rosa rugosa rudimentary organs segment sepal slow-worm social societies sociology species stamens stem stipules stomata structure survival tarsius tendrils terminal thalamencephalon third tion traces transformation undergone useless vertebral column vertebrates vestiges wings
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