59. For invertebrates, which statement is NOT CORRECT?
(A) Molluscs are the most diverse phylum.
(B) Trematodes have very sophisticated defenses against immune system attack.
(C) Tapeworms lack a mouth and a gut.
(D) Echinoderms and vertebrates are more closely related than arthropods.
(E) Barnacles are classified as mollusks because of their trochophore larvae.x = P (mm Hg)y = Percent saturation with oxygenO2 .