問題詳情
4. Strictly speaking, the vascular cambium refers to the:
(A)cambial zone.
(B) single radial file of derivatives.
(C) single radial file of initials.
(D)initials plus their immediate derivatives.
(E) initials, their immediate derivatives, and the most recent xylem and phloem.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增