問題詳情
23. One important difference between the anatomy of roots and the anatomy of leavesis that?
(A) Only leaves have phloem and only roots have xylem
(B) Root cells have cell walls and leaf cells do not
(C) Vascular tissue is found in roots but is absent from leaves
(D) A waxy cuticle covers leaves but is absent from roots
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