53. Which of the following statements regarding vertebrates is correct?
(A) Chondrichthyans have operculum.
(B) Amphibians are amniotes.
(C) Marsupials have fully developed placenta.
(D) Osteichthyans have swim bladders.
(E) None of the above.
詳解 (共 1 筆)
未解鎖
(A). The operculum i...
私人筆記 (共 1 筆)
未解鎖
(A) Chondrichthyans ...
阿摩線上測驗
登入
