試題詳解

48. All animals are considered as a monophyletic clade that originated around 770 million years ago. In terms of their biology and diversity, which one below is NOT true?
(A) All animals have true tissues.
(B) Most of the diversity in animals occurs in Bilateria clade.
(C) In Bilateria, invertebrates do not share a common ancestor.
(D) In Bilateria, vertebrates share a common ancestor.
(E) Sponges are basal of all animals.