Download Herbaceous Dicot Vascular Bundle PNG. The vascular bundles in a monocot herbaceous stem are said to be scattered, because they lack the organization of the dicot vascular bundles. The vascular bundles of herbaceous dicot stems are arranged in a circle or a ring.
I have included a link which indicates the involvement of genes in vascular bundles. The vascular tissue is in the very center of the root. As stem matures and grows, the discrete vascular bundles fuse to form a concentric ring.
Bundles of vascular tissue scattered throughout the stem with no particular arrangement, and pollen with a single furrow or pore.
In a vascular bundle, both xylem and phloem can be seen. Vascular bundles are segments of xylem and associated phloem that run longitudinally within the stem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. Abnormal secondary growth in dicots do not always follow the of vascular cambium producing xylem in the inside and phloem to the outside.