Explanation

Dicot root. There are usually two to four xylem and phloem patches. Later, a cambium ring develops between the xylem and phloem. All tissues on the innerside of the endodermis such as pericycle, vascular bundles and pith constitutes the stele. Pith is well developed in the monocots and is small, inconspicuous in dicots. In monocot, is there is no secondary growth due to the absence of vascular cambium between the xylem and phloem. But secondary growth is the characteristic of dicotyledonous plants