what is the difference b/w radial and biradial symmetry?

Hello Student

Radial symmetry: – It a type of symmetry when any plane passing through the central axis can divide organism into two equal halves and these halves look like mirror images.
For Example: – Hydra, star fish etc
Bilateral symmetry: – It is a type of symmetry in which only one plane can able to divide the organism into equal halves.
For Example: – Human, annelids, arthropoda etc.