Which of the following statements correctly describes the vascular cambium? A. It develops between the primary xylem and the primary phloem in dicots. B. It occurs only in monocot stems. C. It is important in the elongation of roots. D. It is formed by the ground meristem. E. It is responsible for all cell types that result from primary growth.

SouravAugust 24, 2024

Answer

The correct answer is:

A. It develops between the primary xylem and the primary phloem in dicots.

Explanation:

• A. It develops between the primary xylem and the primary phloem in dicots: This statement is accurate. In dicots and gymnosperms, the vascular cambium forms a layer between the primary xylem and primary phloem. It is responsible for secondary growth, producing secondary xylem and secondary phloem.

Incorrect Statements:

• B. It occurs only in monocot stems: This is incorrect. The vascular cambium is present in dicots and gymnosperms but is generally absent in monocots, which typically do not have secondary growth.
• C. It is important in the elongation of roots: This is incorrect. The vascular cambium is primarily involved in secondary growth (increasing the girth of stems and roots), not in the elongation of roots. Elongation is primarily driven by apical meristems.
• D. It is formed by the ground meristem: This is incorrect. The vascular cambium is not formed by the ground meristem but develops from the procambium during primary growth and then contributes to secondary growth.
• E. It is responsible for all cell types that result from primary growth: This is incorrect. The vascular cambium is responsible for secondary growth, not primary growth. Primary growth involves cell types derived from apical meristems.