Radial symmetry is NOT found in adults of phylum
Ctenophora
Hemichordata
Coelenterata
Echinodermata
The correct answer is:
Option 2) Hemichordata
Radial symmetry is not found in adults of the phylum Hemichordata. Hemichordates, which include organisms like acorn worms, exhibit a bilateral symmetry as adults. Radial symmetry is commonly observed in organisms such as cnidarians (formerly referred to as Coelenterata) like jellyfish and corals, as well as in echinoderms such as starfish and sea urchins. Ctenophora, or comb jellies, also exhibit radial symmetry as adults.