Explanation

The characteristic features of vascular bundles of dicot stem are as follows: Vascular bundles are arranged in a ring. They are conjoint, i.e., xylem and phloem are present on the same radius. They are open, i.e., a cambium layer is found between xylem and phloem. They are not surrounded by bundle sheath. The position of protoxylem is towards the centre, i.e., endarch.