What Is A Common Feature Shared By Both The Roundworms And The Arthropods?

What Is A Common Feature Shared By Both The Roundworms And The Arthropods? What is a common feature shared by both the roundworms and the arthropods? One of the key features of the lophotrochozoans is that they have a band of cilia during their larval stage. What do nematodes and arthropods have in common quizlet?