A free-swimming coelenterate larva with a flattened, ciliated body usually lacking internal cavities. Also planula larva.
| 单词 | θ32072 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > member of > embryo (4) planula1835 A free-swimming coelenterate larva with a flattened, ciliated body usually lacking internal cavities. Also planula larva. actinula1871 In some hydrozoans: a mobile tentaculate larva, which develops from a planula and transforms into an adult polyp or medusa after dispersal. Also acti… planulan1886 = planula, n. Subcategories:— modified form of (1) |
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