vascular cambium produces secondary phloes and secondary xylem. interfascicular cambium are been between vascular bundles in near stems.

The vascular cambium adds to secondary xylem and secondary phloem while the cork cambium gives rise to cork and secondary cortex. The vascular cambium is a remnant of the apical meristem while the cork cambium is a true secondary meristem which develops outside the vascular tissues.

Vascular cambium cells get energy from food supplied by ploem cells

no there is no cambium present in monocot roots.

woody stems have more xylem than soft stems