A) phloem
B) vascular bundles
C) cambium
D) secondary xylem
Correct Answer: D
Solution :
The secondary xylem is commonly called wood. The xylem is called primary xylem if its elements are derived from the pro cambium of the apical meristem. It is called secondary xylem, if its elements develop from the vascular cambium during the process of secondary growth.You need to login to perform this action.
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