Compare the characters that differentiate phyla classified as Lophotrochozoa

Compare the characters that differentiate phyla classified as Lophotrochozoa and phyla classified as Ecdysozoa. What features would help you distinguish between these two? Making a chart would probably be helpful! Describe the characteristics of the major Lophotrochozoan phyla (Platyhelminthes, Annelida, Mollusca).