Which is false about sap wood (Alburnum)?

Options

A. It is peripheral part, lighter".colour
B. It is involved in ascent of sap
C. It is sensitive to microbes + insects as it has no deposition of resins, gum, tannins, etc.
D. None

Answer

To determine which statement about sapwood (Alburnum) is false, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Sapwood**:
- Sapwood, also known as Alburnum, is the outer part of the tree trunk, located just beneath the bark. It is lighter in color compared to heartwood.

2. **Evaluating Option 1**:
- **Statement**: "It is the peripheral part and lighter in color."
- **Analysis**: This statement is true. Sapwood is indeed the outer layer of the wood and is lighter in color compared to heartwood.

3. **Evaluating Option 2**:
- **Statement**: "It is involved in the ascent of the sap."
- **Analysis**: This statement is also true. Sapwood plays a crucial role in the conduction of water and nutrients (sap) from the roots to the leaves.

4. **Evaluating Option 3**:
- **Statement**: "It is sensitive to microbes plus insects. It has no deposition of resin, gum, tannin, etc."
- **Analysis**: This statement is true as well. Sapwood is more susceptible to damage from microbes and insects, and it does not contain the deposits of resin, gum, or tannins that are characteristic of heartwood.

5. **Evaluating Option 4**:
- **Statement**: "None."
- **Analysis**: Since all the previous statements (1, 2, and 3) are true, this option indicates that there are no false statements about sapwood.

### Conclusion:
The answer to the question "Which is false about sapwood (Alburnum)?" is **Option 4: None**. All the statements provided about sapwood are true.