The symmetry in which the body cannot be divided into equal halves by any plane is
Asymmetry
Radial symmetry
Bilateral symmetry
Spherical symmetry
The general form of the body is called the symmetry. Asymmetrical animals cannot be divided into equal halves along any plane, for example, sponges. Eg. Some sponges.
Hence, Asymmetrical animals cannot be divided into equal halves along any plane, for example, sponges.