Statement A: Dicot stem has open and endarch vascular bundles.
Statement B: Each vascular bundle of dicot stem has cambium between xylem and phloem and protoxylem is towards the center and metaxylem towards the periphery.
Vascular bundles of dicot stem are wedge or top shaped, conjoint, collateral, open and endarch type. They are arranged in the form of a ring (eustele) around the extensive parenchymatous pith.