According to the cladogram, which organisms have roundworms as a common ancestor?
mollusks and flatworms
sponges and chordates
flatworms, sponges, and cnidarians
mollusks, echinoderms, chordates, and annelids
A cladogram is a diagram that shows the evolution of organisms and the specific trait that manifested in the course of the evolution. The organisms that have roundworms as a common ancestor are probably mollusks, echinoderms, chordates, and annelids
