Question

Four radial V.B. are found in : -

• A. Dicot root
• B. Monocot root
• C. Dicot stem
• D. Monocot stem

Answer 1

The correct option is A Dicot root

A vascular bundle, in which the primary xylem and primary phloem strands are separated from each other by nonvascular tissues and they are situated on alternate radii of an axis, is known as radial vascular bundle or radial bundle. These bundles are the characteristic of roots. There is no primary cambium in this bundle and the secondary thickening occurs by the secondary cambium that originates at the time of secondary growth in dicotyledonous root only. The dicot roots usually have four to six number of protoxylem poles in contrast to monocot root where many poles of xylem (more than six) are present.

So, the correct answer is 'Dicot root'.