单词 | amphiblastula |
释义 | > as lemmasamphiˈblastula amphiˈblastula n. Zool. a blastula composed predominantly of two different cell types, which constitutes a free-swimming larval form in certain sponges. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > blastula periblastula1876 macromere1877 micromere1877 blastula1887 amphiblastula1888 1888 Proc. Boston Soc. Nat. Hist. 23 76 The walls were either double or single on different sides of the same *amphiblastula in Halichondria. 1940 Parker & Haswell Text-bk. Zool. (ed. 6) I. iii. 120 The embryo leaves the parent sponge in the peculiar stage to which the name of amphiblastula is applied. 1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) iii. 25/1 The flagellated embryo is liberated from the parent as an amphiblastula..,and generally swims for a time. < as lemmas |
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