Question

In root-system transition region the vascular bundles are

• A. Radial
• B. Conjoint
• C. Collateral
• D. None

Answer 1

The correct option is D None

The root-stem transition is the region where the tissues of roots are undergoing transition to form the tissues of stem. This region does not belong to root or stem. The radial vascular bundles are undergoing the process of multiplication, forking and shift from radial vascular bundles of roots to conjoint collateral vascular bundles of the stem. Hence, in this region, radial bundles of roots will not appear perfectly radial and the conjoint collateral vascular bundles will appear at the time when the region will be called the stem and not the transition region.

Hence the correct answer is 'None'.