問題詳情
36. ________ is produced in the roots of plants. It promotes cell division and growth, and retards the aging of flowers andleaves?
(A) Ethylene
(B) Abscisic acid
(C) Karrikins
(D) Cytokinins
(E) Gibberellins
參考答案
答案：D
難度：適中0.533333
統計：A(3),B(0),C(1),D(8),E(0)