Question

What is difference between bilateral symmetry and radial symmetry?

Answer 1

Bilateral symmetry:
(i) Limbs and organs are paired.
(ii) Cephalization is present.
(iii) The animal body can be divided into two equal halves by one plane called mid-sagittal plane.
Radial symmetry:
(i) Limbs and organs occur all around the central axis.
(ii) Cephalization is absent.
(iii) The animal’s body can be divided into two equal halves by any vertical plane passing through the central axis.