The Phylum Urochordata Includes The

Question

The phylum Urochordata includes the
A)Ascidiacea and Cephalaspidomorphi.
B)Larvacea and Cephalochordata.
C)Ascidiacea and Thaliacea.
D)Thaliacea and Calcichordata.

Accepted Answer

The phylum Urochordata includes three classes: Ascidiacea, Thaliacea, and Appendicularia (also known as Larvacea). Therefore, choice A and B are incorrect as they do not include all three classes. Choice D is incorrect as Calcichordata is not a valid class within Urochordata.