Question

A leptocentric or amphivasal vascular bundle has

• A. Phloem flanked by xylem on interior and exterior sides only
• B. Xylem flanked by phloem on interior and exterior sides only
• C. Xylem surrounded by phloem
• D. Phloem surrounded completely by xylem

Answer 1

The correct option is D Phloem surrounded completely by xylem

Concentric vascular bundle - One vascular element surrounds the other on all sides. It is of two types : Amphivasal or leptocentric vascular bundle and Amphicribal or Hydrocentric vascular bundle.

In Amphivasal or leptocentric vascular bundle the xylem is seen towards the outer side which surrounds the phloem. Example : Dracena, Yucca.

So, the correct answer is 'Phloem surrounded completely by xylem.'