OBJECTIVE FORESTRY

Detailed explanation-1: -The vascular cambium is a layer of meristematic cells (or initials) that arises between primary xylem and phloem.

Detailed explanation-2: -The vascular cambium produces new vascular tissue and is responsible for most of the radial expansion of stems and roots. In a cross section of a stem or root the vascular cambium exists as a circle of cells, only a few cells in width.

Detailed explanation-3: -A cambium can also be defined as a cellular plant tissue from which phloem, xylem, or cork grows by division, resulting (in woody plants) in secondary thickening. It forms parallel rows of cells, which result in secondary tissues.