Bipinnaria

bipinnaria

[¦bī·pi′ner·ē·ə] (invertebrate zoology) The complex, bilaterally symmetrical, free-swimming larval stage of most asteroid echinoderms.

Bipinnaria

the freely swimming larva of starfish; it has two flickering whips (fins). Like other dipleurulas, it is bisymmetrical and has three pairs of coeloms. Bipinnaria turns into Brachiolaria. Its morphology is similar to that of other invertebrates (such as marine bristle worms, Enteropneusta, and Pogonophora), which suggests the derivation of these groups from a common ancestor.

V. A. SVESHNIKOV

单词	bipinnaria
释义	bipinnaria bipinnaria (ˌbaɪpɪˈnɛərɪə) n (Zoology) a free-swimming starfish larva Bipinnaria bipinnaria [¦bī·pi′ner·ē·ə] (invertebrate zoology) The complex, bilaterally symmetrical, free-swimming larval stage of most asteroid echinoderms. Bipinnaria the freely swimming larva of starfish; it has two flickering whips (fins). Like other dipleurulas, it is bisymmetrical and has three pairs of coeloms. Bipinnaria turns into Brachiolaria. Its morphology is similar to that of other invertebrates (such as marine bristle worms, Enteropneusta, and Pogonophora), which suggests the derivation of these groups from a common ancestor. V. A. SVESHNIKOV
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