Coiled and well developed alimentary canal first develop in A)protozoans B)mammals C)arthropods D)poriferans Share with your friends Share 2 Abhinav Verma answered this I think arthropod -2 View Full Answer Shubh Harkawat answered this It is arthropod. -6 Simran Singh answered this Mammals -3 Karthik answered this Athropods 1 +918xxxxxx46 answered this Coiled and well developed Alimatry canal first developed in -2