Which of the following statements about the vascular cambium is true? It is a type of apical meristem. It develops into cork cells on the outside of the cortex. It is a layer of undifferentiated cells that develops into secondary xylem and phloem. It is located between the primary xylem and cortex.

The correct statement about the vascular cambium is:

It is a layer of undifferentiated cells that develops into secondary xylem and phloem.

Explanation:

• It is a type of apical meristem: This is incorrect. The vascular cambium is not an apical meristem; it is a type of lateral meristem responsible for secondary growth.
• It develops into cork cells on the outside of the cortex: This is incorrect. The vascular cambium itself does not develop into cork cells. Instead, it produces secondary xylem and phloem. Cork cells are produced by the cork cambium.
• It is a layer of undifferentiated cells that develops into secondary xylem and phloem: This is correct. The vascular cambium consists of undifferentiated cells that differentiate into secondary xylem (wood) and secondary phloem (part of the bark).
• It is located between the primary xylem and cortex: This is incorrect. The vascular cambium is located between the primary xylem and primary phloem, not the cortex. The cortex is outside the vascular cambium.