Radial symmetry The arrangement of parts in an organism in such a way that cutting in any plane across the diameter splits the structure into similar halves (mirror images).
Radial symmetry The arrangement of parts in an organism in such a way that cutting in any plane across the diameter splits the structure into similar halves (mirror images).
辐射对称：生物体各部分的一种排列方式，指沿着中轴的任何平面将生物体分开，所产生的两个部分都是对称的（镜像）。