Question

As compared to a dicot root, a monocot root has?

• A. Relatively thicker periderm
• B. Many xylem bundles
• C. More abundant secondary xylem
• D. Inconspicuous annual rings

Answer 1

The correct option is B

Many xylem bundles

The correct answer is B.

The explanation for the correct answer:

1. Monocot plant roots have a comparatively wider and fibrous root-like structure.
2. Dicot plant roots have a comparatively narrow, tap root-like structure.
3. Dicots have a limited number of Xylem and Phloem.
4. Whereas, Monocots have a higher number of Xylem and Phloem.

The explanation for the Incorrect option:

Option A:

Dicots have a thicker periderm, giving rise to cork cambium, parts of the vascular cambium, and lateral roots. At the same time, Monocots give rise to lateral roots only.

Option C:

Secondary growth does not occur in monocots.

Option D:

Monocot stems do not have a vascular cambium & do not exhibit secondary growth by producing concentric annual rings.

Final answer:

As compared to a dicot root, a monocot root has many xylem bundles.