2. What is the primary function of the vascular cambium in plants undergoing secondary growth?
(A)Producing secondary xylem towards the inside
(B) Producing secondary phloem towards the inside
(C)Increasing the length of stems and roots
(D) Developing the epidermis in young plant tissues

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統計: A(4), B(2), C(0), D(0), E(0) #3386669

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題目解析 本題詢問的是植物在進行次生生長...
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