Which one of the following is commonly found in temperate coniferous forest

Options

A. Quercus
B. Dipterocarpus
C. Shorea robusta
D. Pinus wallichiana

Explanation

### Step-by-Step Solution:

1. **Understanding Temperate Coniferous Forests**:
- Temperate coniferous forests are characterized by evergreen trees that retain their foliage throughout the year. The leaves of these trees are typically needle-like, which helps them survive in cold and dry conditions.

2. **Analyzing the Options**:
- The question provides four options: Quarkus, Dipterocarpus, Shoria arabista, and Pinus walshiana. We need to determine which of these is commonly found in temperate coniferous forests.

3. **Evaluating Each Option**:
- **Quarkus (Oak)**: This tree is usually found in evergreen tropical forests, not temperate coniferous forests. Therefore, it is not the correct answer.
- **Dipterocarpus**: This tree is also found in tropical forests, particularly in Southeast Asia, and is not associated with temperate coniferous forests. Thus, it is incorrect.
- **Shoria arabista**: This species is typically found in deciduous forests, which shed their leaves, unlike coniferous forests. Hence, this option is also incorrect.
- **Pinus walshiana**: This is a type of pine tree, which is characteristic of temperate coniferous forests. Its needle-like leaves and cone-bearing structure make it well-adapted to the conditions of these forests.

4. **Conclusion**:
- After evaluating all the options, the correct answer is **Pinus walshiana**, as it is the only species that is commonly found in temperate coniferous forests.

### Final Answer:
**Pinus walshiana** is commonly found in temperate coniferous forests.

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