Your lab group is charged with the identification of an unknown creature. Your lab partners believe that it is a small annelid because of its worm-like appearance. You argue it is a nematode. To convince your lab partners, you point out certain distinguishing characteristics. Check the characteristics that are associated with nematodes. A. Nematodes secrete a cuticle which is made primarily of collagen
B. Nematodes possess both longitudinal and circular muscles
C. Their pseudocoelom functions both as a circulatory system and a hydrostatic skeleton
D. Fertilization takes place intemoly.