What is the difference between open and closed type

Hi Suganyag,
Differences between open and closed type vascular bundles are as follows:
Open vascular bundle
Closed vascular bundle
 Vascular cambium is present in between xylem and phloem in vascular bundle.
No cambium is present
It is capable of secondary growth
It is not capable of secondary growth.
It is present in dicots
It is present in monocots
Hope this answer helps,
All the best!

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