Vascular bundel with `2:1` ratio of phloem and xylem is

In collateral vascular bundle, I. single patch of phloem and xylem present. II. Two patches of phloem and one of xylem present. III. Phloem present outward and xylem present inward. IV. Phloem present outward as well as inward to the xylem.

A concentric vascular bundle where phloem surrounds the xylem is called _____

Vascular bundles in which xylem and phloem surround one another is called

Vascular bundles where the phloem is found to be present on both sides of xylem is said to be:

Vascular bundles in which xylem and phloem surround one another is called

Vascular bundles where the phloem is found to be present on both sides of xylem is said to be

A vascular bundle in which phloem surrounds the sylem or xylem surrounds the phloem completely is called

Vascular bundles having xylem and phloem on different radii.