Monocots and dicots – stem vascular bundles
Monocots have scattered vascular bundles. Dicots have vascular bundles in a ring.
Two cots (dicots) connected together by rings (vascular rings).
If you cut a dicot stem and view one of the cut ends, you will see that the vascular bundles are arranged in a ring shape.
If you do the same to a monocot stem, you will see the vascular bundles are scattered.