Question: One of the key features of the lophotrochozoans is that? Need Assignment Help? Multiple Choice the larval stage is flagellated while the adult stage is characterized by a band of cilia. they have a band of cilia during their larval stage. the larval stage has two germ layers while the adult body has three germ layers. all lophotrochozoans are acoelomate. the larval stage is radially symmetric while the adult stage is bilaterally symmetric.