Springwood is the

Options

A. (a) Outer functional part of secondary xylem
B. (b) inner nonfunctional part of secondary xylem
C. (c) Outer as well as inner part of secondary xylem
D. (d) None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Springwood**: Springwood, also known as early wood, is formed during the spring season when the cambium layer is most active.

2. **Role of Cambium**: The cambium is a type of meristematic tissue responsible for secondary growth in plants. It produces new layers of xylem and phloem.

3. **Characteristics of Springwood**: Springwood is characterized by being soft and porous. It contains functional xylem, which is essential for the transport of water and minerals in the plant.

4. **Structure of Xylem**: The xylem in springwood has larger vessels with wider lumens, allowing for more efficient water transport compared to the xylem formed later in the season (summerwood).

5. **Location of Springwood**: Springwood is located on the outer side of the secondary xylem, which is part of the sapwood.

6. **Evaluating Options**:
- Option A states that springwood is the outer functional part of secondary xylem, which is correct.
- Option B states it is the inner non-functional part, which is incorrect.
- Option C states it is both outer and inner, which is incorrect.
- Option D states none of the above, which is also incorrect.

7. **Conclusion**: The correct answer is that springwood is the outer functional part of secondary xylem.

**Final Answer**: Springwood is the outer functional part of secondary xylem.

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