問題詳情
13. Which of the following is NOT a defining trait of the phylum Chordata?
(A) notochord
(B) dorsal hollow nerve cord
(C) pharyngeal slits
(D) post anal tail
(E) protostome development
(A) notochord
(B) dorsal hollow nerve cord
(C) pharyngeal slits
(D) post anal tail
(E) protostome development
參考答案
答案：E
難度：適中0.615385
統計：A(2),B(2),C(0),D(0),E(8)
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