Vascular bundles
Narrow, hollow, dead tubes with lignin, responsible for the transport of water and minerals in plants. and The tissue in plants that transports the products of photosynthesis, including sugars and amino acids. tissues are found in groups called Groups of xylem and phloem tissue in a plant.. The position of these bundles varies in different parts of the plant. In a leaf, the phloem is usually found closer to the lower surface.
Root
Xylem vessels are tough and strong, so the vascular bundles are in the centre of the root to resist forces that could pull the plant out of the ground.
Stem
The stem has to resist compression (squashing) and bending forces caused by the plant’s weight and the wind. The vascular bundles are arranged near the edge of the stem, with the phloem on the outside and the xylem on the inside.