| 单词 | gemmation |
| 例句 | Cryptogamous plants with a distinct axis or stem, growing from the apex, and commonly not with later increase in diameter, usually furnished with distinct leaves; reproduction by antheridia and archegonia, sometimes also by gemmation. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z At this stage of development, the author frequently observed gemmation taking place at the thicker end, sometimes frequently repeated. The Romance of Natural History, Second Series He learns that whole tribes of creatures multiply by gemmation—by a development from the body of the parent of buds which, after unfolding into the parental form, separate and lead independent lives. Essays: Scientific, Political, & Speculative, Vol. I Minor, W. C., gemmation and fission in the Annelida, ii. The Variation of Animals and Plants Under Domestication, Volume II (of 2) Through gemmation, differentiation, segmentation, evolution, or whatever other technical expressions we may use for division, multiplication, budding, increase, etc., each cell became a hundred, a thousand, a million. The Silesian Horseherd - Questions of the Hour Therefore in many of such lower organisms such a congeries of ancestral gemmules must exist in every part of their bodies, since in them every part is capable of reproducing by gemmation. On the Genesis of Species This brood is again wingless, and it proceeds at once to bud out several generations more, by internal gemmation, as long as the warm weather lasts. Falling in Love With Other Essays on More Exact Branches of Science The starting-point, not only of every higher animal or plant, but of every clan of organisms which by fission or gemmation have sprung from a single organism, is always a spore, seed, or ovum. Essays: Scientific, Political, & Speculative, Vol. I The latter is effected in many ways—by gemmation, that is by the formation of buds of various kinds, and by fissiparous generation, that is by spontaneous or artificial division. The Variation of Animals and Plants Under Domestication, Volume II (of 2) Machinery Hall has illustrated, from its earliest days, the process of development by gemmation. Lippincott's Magazine of Popular Literature and Science Volume 17, No. 100, April, 1876 The lichens have a very peculiar method of gemmation. Scientific American Supplement, No. 531, March 6, 1886 Ignorant of the joys and cares of wedlock, he increases by gemmation. Prose Idylls, New and Old Young specimen, with buds or corallites on the disk, illustrating calicular gemmation. b. The Student's Elements of Geology Clark, H. J., on fission and gemmation, ii. The Variation of Animals and Plants Under Domestication, Volume II (of 2) HUXLEY, Prof., on the transmission of polydactylism. -on unconscious selection. -on correlation in the mollusca. -on gemmation and fission. -development of star-fishes. The Variation of Animals and Plants under Domestication — Volume 2 MULLER, J., tendency to variation. -atrophy of the optic nerve consequent on destruction of the eye. -on gemmation and fission. -identity of ovules and buds. -special affinities of the tissues. The Variation of Animals and Plants under Domestication — Volume 2 |
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