Adifference between coelomates and pseudocoelomates is that
a. one has bilateral symmetry and one does not.
b. pseudocoelomates have a true coelom.
c. the gut of a pseudocoelomate is surrounded by the body cavity, and the gut of a coelomate is surrounded by the mesoderm.
d. the gut of a pseudocoelomate is surrounded by the endoderm, and the gut of a coelomate is surrounded by the ectoderm.