英语词汇“pseudogastrula”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

pseudogastrula n.

Brit.

/ˌs(j)uːdə(ʊ)ˈɡastrᵿlə/

U.S.

/ˌsudoʊˈɡæstrələ/

Zoology (now rare) a blastula which has undergone invagination prior to gastrulation; spec. (in certain calcareous sponges) one in which the archaeocytes of one hemisphere have become completely enclosed by flagellated cells of the other (before half of these lose their flagella to produce the amphiblastula).

ΚΠ

1880 Amer. Naturalist 14 483 The pseudogastrula normally occurs only before the larva leaves the follicle of the parent body.

1909 J. W. Jenkinson Exper. Embryol. iv. 237 A posterior quarter may gastrulate in the way described for the posterior half, but exogastrulae and pseudogastrulae occur.

1958 Q. Rev. Biol. 33 26/2 The alterations of shape in the blastula (pseudogastrula, stomoblastula,..) are intelligible as a result of the small space available for embryonic expansion in the body of the parent sponge.

单词	pseudogastrula
释义	> as lemmas pseudogastrula pseudogastrula n. Brit. /ˌs(j)uːdə(ʊ)ˈɡastrᵿlə/ , U.S. /ˌsudoʊˈɡæstrələ/ Zoology (now rare) a blastula which has undergone invagination prior to gastrulation; spec. (in certain calcareous sponges) one in which the archaeocytes of one hemisphere have become completely enclosed by flagellated cells of the other (before half of these lose their flagella to produce the amphiblastula). ΚΠ 1880 Amer. Naturalist 14 483 The pseudogastrula normally occurs only before the larva leaves the follicle of the parent body. 1909 J. W. Jenkinson Exper. Embryol. iv. 237 A posterior quarter may gastrulate in the way described for the posterior half, but exogastrulae and pseudogastrulae occur. 1958 Q. Rev. Biol. 33 26/2 The alterations of shape in the blastula (pseudogastrula, stomoblastula,..) are intelligible as a result of the small space available for embryonic expansion in the body of the parent sponge. extracted from pseudo-comb. form < as lemmas
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> as lemmas