Which of the following statements about the vascular cambium is true?

• A. The vascular cambium is involved in the primary growth of roots.
• B. The vascular cambium is responsible for the secondary growth in plants.
• C. The vascular cambium is found in the digestive system of mammals.
• D. The vascular cambium is a part of the human circulatory system.

Answer: (B)

Verified step by step guidance

1. Understand the role of the vascular cambium: The vascular cambium is a type of lateral meristem in plants that is responsible for secondary growth, which increases the thickness of stems and roots.
2. Differentiate between primary and secondary growth: Primary growth in plants is responsible for the increase in length and is facilitated by apical meristems, while secondary growth, facilitated by the vascular cambium, increases the girth of the plant.
3. Identify the location of the vascular cambium: It is found in plants, specifically between the xylem and phloem tissues, and not in animals or humans.
4. Clarify the misconception about the vascular cambium in animals: The vascular cambium is not part of the human circulatory system or the digestive system of mammals, as it is exclusive to plant biology.
5. Conclude with the correct statement: The vascular cambium is responsible for the secondary growth in plants, which is the correct statement among the given options.