Vascular tissues in flowering plants develop from:

Explanation

Dermatogen is the region or histogen of a single layer of outermost cells formed from the apical meristem. Dermatogen gives rise to the epidermis of the stem and other aerial parts. Periblem is the middle histogen that forms the cortex of the stem and roots. The plerome is the central histogen that forms a stele or part of the stem and roots inner to the endodermis. Part of the plerome that forms vascular tissues is called procambium. The pericycle layer converts into a secondary meristem called cork cambium or phellogen which divides to form a secondary cortex or phelloderm.