Questions

The group that contains radially symmetrical animals as adults is Cnidaria.

Cnidarians, such as jellyfish, sea anemones, and corals, exhibit radial symmetry as adults. In this symmetry, the body parts are arranged around a central axis, and they can be divided into similar halves by multiple planes that pass through this central point.

Other examples of radially symmetrical animals include Echinodermata (like starfish), which are bilaterally symmetrical as larvae but exhibit radial symmetry as adults.