gemmation

1 At this stage of development, the author frequently observed gemmation taking place at the thicker end, sometimes frequently repeated.

2 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.

3 Clark, H. J., on fission and gemmation, ii.

4 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.

5 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.

6 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.

7 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.

8 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.

9 Machinery Hall has illustrated, from its earliest days, the process of development by gemmation.

10 The lichens have a very peculiar method of gemmation.

11 Ignorant of the joys and cares of wedlock, he increases by gemmation. 

12 Young specimen, with buds or corallites on the disk, illustrating calicular gemmation. b.

13 Minor, W. C., gemmation and fission in the Annelida, ii.

14 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.

15 HUXLEY, Prof., on the transmission of polydactylism. -on unconscious selection. -on correlation in the mollusca. -on gemmation and fission. -development of star-fishes.

1 发芽生殖

gemmate

2 发芽

budding budded germinant movement germination take bud sprout germinate burgeon bourgeon shoot come into bud

3 出芽生殖

gemmate gemmiferous gemmiparous proliferous

4 出芽

budding gemmate rise sprout grow out

5 芽生法

blastogenesis