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单词 Hemichordata
释义

Definition of Hemichordata in English:

Hemichordata

plural noun ˌhɛmɪkɔːˈdeɪtəˌheməkôrˈdādä
Zoology
  • A small phylum of marine invertebrates that comprises the acorn worms.

    Example sentencesExamples
    • The superphyla Deuterostomia (e.g., Chordata, Echinodermata, Hemichordata) and Protostomia each appear to have evolved from an ancestor with a coelomic body cavity.
    • Another of Ax's hypotheses concerns the Hemichordata.
    • Deuterostomia are a major group of metazoans composed of three phyla: Chordata, Hemichordata, and Echinodermata.
    • The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.
    • Metamorphosis in the acorn worms (Hemichordata, Enteropneusta) includes retention of the entire larval body, which sheds feeding and propulsory cilia and undergoes definitive shape changes.

Origin

Modern Latin (see hemi-, Chordata).

 
 

Definition of Hemichordata in US English:

Hemichordata

plural nounˌheməkôrˈdādä
Zoology
  • A small phylum of marine invertebrates that comprises the acorn worms.

    Example sentencesExamples
    • The superphyla Deuterostomia (e.g., Chordata, Echinodermata, Hemichordata) and Protostomia each appear to have evolved from an ancestor with a coelomic body cavity.
    • Another of Ax's hypotheses concerns the Hemichordata.
    • The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.
    • Metamorphosis in the acorn worms (Hemichordata, Enteropneusta) includes retention of the entire larval body, which sheds feeding and propulsory cilia and undergoes definitive shape changes.
    • Deuterostomia are a major group of metazoans composed of three phyla: Chordata, Hemichordata, and Echinodermata.

Origin

Modern Latin (see hemi-, Chordata).

 
 
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更新时间:2024/12/24 10:25:31