Xylem and phloem occurring on the same radius constitute a vascular bundle called
A. Radial – xylem and phloem are present on separate radii, in the vascular bundles.
B. Conjoint – xylem and phloem are present side by side, in the vascular bundles.
C. Collateral – xylem and phloem are present on the same radius, in the vascular bundles.
D.Bicollateral – a xylem is present in between the two phloems, and all three are on the same radius in the vascular bundles.
So, the correct option is ‘Collateral’.