chordate

chordate

1. Any of some 2,000 species (chordate subphylum Tunicata, or Urochordata) of small marine invertebrates that are abundant worldwide.

2,000多种小型海洋无脊椎动物（脊索动物门被囊动物亚门或尾索动物亚门），大量存在于世界各地。

2. The middle zone of the mesoderm of a chordate vertebrate embryo, from which excretory tissue develops.

中胚叶节脊索类脊椎动物胚胎的中胚层的中间部分，最终会发育成排泄组织

3. the middle zone of the mesoderm of a chordate vertebrate embryo,from which excretory tissue develops

中胚叶节，脊索类脊椎动物胚胎的中胚层的中间部分，最终会发育成排泄组织

4. See also algae, arthropod, bacteria, chordate, invertebrate, protist, protozoan, vertebrate.

亦请参阅algae、arthropod、bacterium、chordate、invertebrate、protozoan、vertebrate。

5. The snake belongs to chordate phyla, vertebrate, reptile, squamata, serpents, in the animal kingdom.

从毒蛇蛇头毒腺分泌出的一种毒素。

6. primitive chordate

原始脊索动物

7. any of various primitive chordate animals of the subphylum Cephalochordata,such as the lancet,that lack a true vertebral column

头索动物亚门的一种原始脊索动物，如帆蜥鱼，无真正的脊柱

8. Any of various primitive chordate animals of the subphylum Cephalochordata, such as the lancet, that lack a true vertebral column.

头索动物头索动物亚门的一种原始脊索动物，如帆蜥鱼，无真正的脊柱

9. A chordate marine animal of the subphylum Urochordata;a tunicate.

尾索动物尾索动物亚门的海生脊索动物;被囊动物

10. A chordate marine animal of the subphylum Urochordata; a tunicate.

尾索动物尾索动物亚门的海生脊索动物；被囊动物

11. Our results firmly demonstrate that each of extant deuterostome phyla and chordate subphyla is monophyletic.

我们的结果表明现存后口动物中各个门均为单系起源，同样脊索动物的各个亚门也为单起源，但在系统发生关系分析中，序列选择的变化能够导致不同的进化树生成。

12. a chordate marine animal

海生脊索动物

13. Abstract The bird has a variety of types,disbuting all over the globe.It is only insupior to the fish in chordate.

现今已知鸟类约有9000余种，分为两个亚纲，即古鸟亚纲和今鸟亚纲。

14. "Chordate:any of numerous animals belonging to the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill slits and including all vertebrates and certain marine animals, such as the lancelets."

脊索动物:包括所有的脊椎动物以及如文昌鱼之类的海洋动物的脊索动物门的大量动物中的任一个,在某些生长阶段有背部神经索、背索及鳃裂.

15. The snake belongs to chordate phyla vertebrate reptile squamata serpents in the animal kingdom.

蛇在动物界属脊索动物门、脊椎动物亚门、爬行纲、有鳞目、蛇亚目。

16. Any of various chordate marine animals of the subphylum Tunicata or Urochordata having a cylindrical or globular body enclosed in a tough outer covering and including the sea squirts and salps.

被囊动物属于尾索亚门或囊亚门的各种脊索类海生动物中的一种，身体呈圆形或球形，包在坚硬的壳中，这动物包括海鞘和萨尔帕属的背囊动物

17. tunicates Urochordata in which chordate features are found only in the larva and are normally lost in the adults (sea squirts, larvaceans, salps).

被囊类尾索动物具有脊索特徵只在幼体中被发现，而且通常在成鱼(海椿象，幼形目被囊动物)失去。