問題詳情
10. Megaphylls evolved from:
(A) microphylls that became more elaborate due to hormonal interactions.
(B) enations that became vascularized.
(C) spines that became vascularized.
(D) three-dimensional branching systems that became planated and webbed.
(E) the elaboration of ligules.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中