Peripheral region of secondary xylem , which is light in color and Which caused conduction of water and minerals is known as

Options

A. Heartwood (duramen )
B. Sapwood (alburnum )
C. Spring wood
D. Autumn wood

Answer

To solve the question regarding the peripheral region of secondary xylem that is light in color and responsible for the conduction of water and minerals, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Xylem Structure**:
- The xylem is responsible for the transport of water and minerals in plants. It consists of two main regions: the outer region (secondary xylem) and the inner region.

2. **Identifying the Regions**:
- The outer region of the secondary xylem is known as **sapwood** (also referred to as alburnum), while the inner region is known as **heartwood** (or duramen).

3. **Characteristics of Sapwood**:
- Sapwood is lighter in color compared to heartwood. It contains living cells that actively conduct water and minerals from the roots to the rest of the plant.

4. **Characteristics of Heartwood**:
- Heartwood is older xylem that has ceased to conduct water. It is darker in color due to the accumulation of certain chemicals, such as tannins.

5. **Conclusion**:
- Given that the question specifically asks for the peripheral region of secondary xylem that is light in color and responsible for conduction, the correct answer is **sapwood**.

### Final Answer:
The peripheral region of secondary xylem, which is light in color and responsible for the conduction of water and minerals, is known as **sapwood**.