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词汇 diploblastic
释义

Definition of diploblastic in English:

diploblastic

adjectiveˌdɪplə(ʊ)ˈblastɪkˌdiplōˈblastik
Zoology
  • Having a body derived from only two embryonic cell layers (ectoderm and endoderm, but no mesoderm), as in sponges and coelenterates.

    〔动〕双胚层的

    Example sentencesExamples
    • According to Haeckel, the gastrula stage can be found in the development of all animals, and represents the recapitulation of the ancestral metazoan, the Gastraea, a diploblastic animal with a ciliated gut.
    • The transition from diploblastic to triploblastic body plans hinges on the origin of mesoderm.
    • The anthozoans are diploblastic animals developing from two epithelial germ cell layers: the ectoderm, facing the seawater, and the endoderm, facing the gastrovascular cavity or coelenteron.
    • Compartmentalization is also the underlying advantage epithelia provide in triploblastic descendants of a diploblastic ancestor.
    • The other diploblastic phylum, the Ctenophora, surprisingly, has not been reported to have septate junctions.

Definition of diploblastic in US English:

diploblastic

adjectiveˌdiplōˈblastik
Zoology
  • Having a body derived from only two embryonic cell layers (ectoderm and endoderm, but no mesoderm), as in sponges and coelenterates.

    〔动〕双胚层的

    Example sentencesExamples
    • According to Haeckel, the gastrula stage can be found in the development of all animals, and represents the recapitulation of the ancestral metazoan, the Gastraea, a diploblastic animal with a ciliated gut.
    • The transition from diploblastic to triploblastic body plans hinges on the origin of mesoderm.
    • The other diploblastic phylum, the Ctenophora, surprisingly, has not been reported to have septate junctions.
    • The anthozoans are diploblastic animals developing from two epithelial germ cell layers: the ectoderm, facing the seawater, and the endoderm, facing the gastrovascular cavity or coelenteron.
    • Compartmentalization is also the underlying advantage epithelia provide in triploblastic descendants of a diploblastic ancestor.
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