Vascular bundles with lysigenous cavity are present in

In the internal structure of monocot stem, there is no organisation of endodermis, pericycle, medulla in many cases, and medullary rays. Randomly arranged, innumerable vascular bundles have fibrous bundle sheath, with peripheral phloem and inner xylem having 3 or 4 vessels arranged in the form of V or Y. Protoxylem has a lysigenous cavity known as protoxylem lacuna in which water is stored.