Highly durable and commercial valuable wood of the following is

Options

A. Spring wood
B. Heart wood
C. Late wood
D. Sapwood

Answer

To determine the highly durable and commercially valuable wood from the options given (springwood, hardwood, latewood, and sapwood), we can analyze each type of wood based on their characteristics.

### Step-by-Step Solution:

1. **Understand the Types of Wood**:
- **Springwood (Early Wood)**: This type of wood is produced during the early part of the growing season. It is generally softer and less dense, which makes it less durable and not commercially valuable.
- **Hardwood (Duraman)**: Hardwoods come from deciduous trees and are known for their density and strength. They contain dead cells and materials such as tannins and gums, which provide resistance to microbial attacks. This makes hardwood highly durable and commercially valuable.
- **Latewood (Antimon Wood)**: Latewood is produced later in the growing season. While it is denser than springwood, it does not possess the same level of durability or commercial value as hardwood.
- **Sapwood (Alburanum)**: Sapwood is the younger, outermost wood of a tree, responsible for transporting nutrients. It does not have the same durability or commercial value as hardwood.

2. **Evaluate Durability and Commercial Value**:
- Among the options, hardwood stands out due to its high density, strength, and resistance to decay. The presence of tannins and other materials enhances its durability and makes it commercially valuable.

3. **Conclusion**:
- Based on the analysis, the highly durable and commercially valuable wood from the options provided is **hardwood**.

### Final Answer:
The highly durable and commercially valuable wood is **hardwood**.

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