Question

which is the vascular bundle in which cambium is present?

Answer 1

primary xylem and primary phloem

Answer 2

vascular cambium. The vascular cambium (also called main cambium, wood cambium, bifacial cambium; plural cambia) is a plant tissue located between the xylem and the phloem in the stems and roots of vascular plants. It is a cylinder of unspecialized meristem cells that divide to form secondary vascular tissues.
primary xylem and phloem