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