Is the vascular bundle of the dicotyledonous stem shown in the dicotyledonous stem open or closed Reason?

In dicotyledonous stems, the vascular bundles are typically open, meaning they contain both xylem and phloem tissues that are separated by a region of cambium. This cambium allows for secondary growth, enabling the plant to increase in diameter over time. In contrast, closed vascular bundles, which are found in monocot stems, lack cambium and do not support secondary growth.