Arrangement of vascular bundles in a dicot root is

Collateral.

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Radial.

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Bicollateral.

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Conjoint.

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Solution

The correct option is B Radial.
Arrangement of vascular bundles in a dicot root is radial. In this, the xylem and the phloem are arranged separately. The xylem and the phloem are situated on alternate radii of an axis.
Thus, the correct answer is option B.

Suggest Corrections

(A) Conjoint collateral -	Conjoint bicollateral
(B) Conjoint bicollateral -	Conjoint collateral
(C) Conjoint collateral closed -	Conjoint collateral open
(D) Conjoint collateral open -	Conjoint collateral closed