問題詳情

4. A plant produces a guard cell hormone under water-deficit conditions. Most likely the hormone is _____.
(A) 2, 4-D
(B) gibberellin
(C) IAA
(D) abscisic acid
(E) ethylene

參考答案

答案：D
難度：簡單0.789474
統計：A(1),B(0),C(1),D(15),E(0)