問題詳情
12.榕樹莖內維管束含有形成層,不斷增生新的木質部和新的韌皮部,使莖加粗,於是莖內含有:甲.新的質部；乙.老的木質部；丙.新的韌皮部；丁.老的韌皮部。以上構造由外而內排列順序為何?
(A)甲→乙→丙→丁
(B)乙→甲→丙→丁
(C)丙→丁→甲→乙
(D)丁→丙→甲→乙。
(A)甲→乙→丙→丁
(B)乙→甲→丙→丁
(C)丙→丁→甲→乙
(D)丁→丙→甲→乙。
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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