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3 votes
Consider the cladogram.

mc013-1.jpg

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

2 Answers

1 vote
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
User Orbling
by
8.7k points
5 votes

For those of us who like simple answers the answer is D) mollusks, echinoderms, chordates, and annelids

User Moak
by
8.9k points
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