Abnormal/anomalous secondary growth occurs in (a) Dracaena (b) ginger (c) wheat (d) sunflower.
Option A Monocot trees such as palms grow in thickness by primary thickening meristem situated at the base of the leaf. Plants like Dracaena show secondary growth by a special cambium. It develops in the form of strips just outside the vascular region. This cambial strips produce secondary vascular bundles which is amphivasal in Dracaena
