DENDROLOGY

Detailed explanation-1: -The vascular bundle is composed of xylem, phloem, and sometimes a layer of cambium cells. Xylem transports water for the plant, while phloem transports food materials. Cambium cells divide to produce new xylem and phloem as the plant grows. This also contributes to rings in trees and the layers of bark in woody plants.

Detailed explanation-2: -A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues.