Bilateral Symmetry | Radial Symmetry |
Limbs and organs are paired. | Limbs and organs occur all around the central axis. |
Cephalization is present. | Cephalization is absent. |
Body can be divided into two equal halves (mirror images) by mid-sagittal plane. | Body can be divided into two equal halves by any vertical plane passing through the central axis. |
Examples: Earthworms, humans etc. | Examples: Starfish , Hydra etc. |