If You Are Told That the Digestive Tract of the Animal

Multiple Choice

If you are told that the digestive tract of the animal you are studying developed an anus before a mouth, you may be looking at:

A) an arthropod.
B) an animal in which the embryo undergoes radial cleavage.
C) an animal in which the embryo undergoes indeterminate cleavage.
D) an animal in which the embryo undergoes enterocoely.
E) an animal in which the embryo undergoes radial, indeterminate cleavage and enterocoely.