Question

06. In which of the following, stele has abundant
medulla with exarch and polyarch xylem.
1) Roots of sugarcane
2) Roots of ground nut
3) Stem of sugarcane
4) Stem of ground nut​

Answer 1

Answer:

In a vascular plant, the stele is the central part of the root or stem containing the tissues derived from the procambium. These include vascular tissue, in some cases ground tissue (pith) and a pericycle, which, if present, defines the outermost boundary of the stele. In other words, vascular bundle or the stele consists of three tissues: the pericycle, the xylem, and the phloem. Outside the stele lies the endodermis, which is the innermost cell layer of the cortex.