AP BIOLOGY

Detailed explanation-1: -In the animal kingdom, there are two broad phyla that exhibit radial symmetry: One of these is cnidaria, which include jellyfish, anemones, and corals. Jellyfish exhibit radial symmetry in four points around its center. The other phylum is echinodermata, such as sea stars, urchins, and sea cucumbers.

Detailed explanation-2: -Radial Symmetry This form of symmetry marks the body plans of animals in the phyla Ctenophora (comb jellies) and Cnidaria (corals, sea anemones, and other jellies).

Detailed explanation-3: -Cnidarians have radial symmetry. Echinoderms are bilateral animals that have a 5-part radial symmetry as adults.

Detailed explanation-4: -The body plans cnidarians generally have radial symmetry (Fig. 3.25 A). Because the tentacles of corals, jellyfish, and sea anemones have this radial structure, they can sting and capture food coming from any direction.

Detailed explanation-5: -The echinoderms have a radially arranged, pentamerous body structure that is very different from the bilateral body structure of the related deuterostome phyla, the hemichordates and the chordates.