問題詳情

47. The first vertebrates are most closely related phylogenetically to which of the following phyla?
(A) Echinodermata.
(B) Annelida.
(C) Mollusca.
(D) Arthropoda.
(E) None of these.

參考答案

答案:A
難度:困難0.375
統計:A(3),B(1),C(1),D(1),E(0)

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