Question

What animals are not symmetrical?

Answer 1

Symmetrical animals:

1. Radial symmetry means any plane passing through the central axis of the body divides the organism into two identical halves.
2. Examples of radial symmetry are Coelenterates, ctenophores, and echinoderms.
3. Bilateral symmetry means the body can be divided into identical left and right halves in only one plane.
4. Examples of bilateral symmetry are annelids, arthropods, etc.

Asymmetrical animals:

1. Animals can be distinguished on the basis of symmetry.
2. An asymmetrical symmetry means any plane that passes through the center does not divide them into equal halves.
3. An example of asymmetrical symmetry is Sponges.
4. Only members of the phylum Porifera (sponges) have no body plan symmetry.
5. There are some fish species, such as flounder, that lack symmetry as adults.
6. However, the larval fish are bilaterally symmetrical.