Which one occurs in echinodermata? (a) Bilateral symmetry (b) Radial symmetry (c) Porous body (d) Soft skin
Option B Radial symmetry is the arrangement of parts in an organ or organism such that cutting through the centre of the structure in any direction produces two halves that are mirror images of each other. All animals belonging to the cnidaria (e.g., jellyfish) and echinodermata (e.g., starfish) are radially symmetrical.
