Which phylum is characterized by pentameral symmetry (五辐射对称)? A: Mollusca B: Ctenophora C: Echinodermata D: Chaetognatha (毛颚动物门)
Which phylum is characterized by pentameral symmetry (五辐射对称)? A: Mollusca B: Ctenophora C: Echinodermata D: Chaetognatha (毛颚动物门)
1