7. A conjoint and open vascular bundle will be observed in the transverse section of

(a) monocot root

(b) monocot stem

(c) dicot root

(d) dicot stem

(d) Dicot Stem
Vascular bundles are said to be open when cambium is present in between the xylem and phloem. Conjoint means the xylem and phloem are united and are present on the same radius.