Question

Given below are descriptions regarding the stem of a dicot plant. Identify the correct statements from the following.
A. The protoxylem lies towards the periphery and the metaxylem lies towards the center.
B. Since they lack cambium, the vascular bundles are closed.
C. Vascular bundles are arranged in a ring.

• A. A and B
• B. B and C
• C. Only C
• D. A, B and C

Answer 1

The correct option is C Only C

In dicot stems, the protoxylem lies towards the center (pith), and the metaxylem lies towards the periphery. This type of arrangement of xylem is called endarch. The roots exhibit exarch condition where the protoxylem lies towards the periphery, and the metaxylem lies towards the center.

In a dicot stem, cambium is present between the xylem and phloem, and the vascular bundles are open. On the other hand, a closed vascular bundle is seen in monocot stems and roots in which the cambium is absent.

The arrangement of vascular bundles in a ring is a characteristic of dicot stem.