Question

When phloem completely surrounds the xylem, the vascular bundle is called ___________.

• A. Amphivasal vascular bundle
• B. Radial vascular bundle
• C. Bicollateral vascular budle
• D. Amphicribral vascular bundle

Answer 1

Answer: (D)

Amphicribral vascular bundle

A. Amphivasal vascular bundle- when the xylem surrounds the phloem and is also called leptocentric.

B. Radial vascular bundle- when xylem and phloem have different radii and alternate each other.

C. Bicollateral vascular bundle- when two patches of cambium and one patch of xylem are present at the centre.

D. Amphicribral vascular bundle- when the phloem completely surrounds the xylem and is also called hydrocentric.

So, the correct answer is 'Amphicribral vascular bundle'.