tissue produces a structure that occurs in a concentric ring in eudicot stems, but scattered in monocot stemsa

Why can a monocot like an iris branch and increase its number of leaves? Is the fact that the shoot is a rhizome with adventitious roots important? Is water transported from one end of the shoot to the other?

For the following descriptions - indicate whether they describe a monocot or a eudicot. -parallel veins in leaves                                             -root system is a taproot                                                -flower organs in groups of 4 or 5                                                -vascular bundles scattered in the stem                                                -capable of woody growth                                                -pollen grain with three openings                                                -embryo with one cotyledon

Secondary growth in eudicot stems and roots is caused by what