The wood formed during spring season is called :

Options

A. Spring wood
B. Early wood
C. Both 1 and 2
D. Late wood

Answer

**Step-by-Step Solution:**

1. **Understanding Wood Formation**: In large trees, the growth of wood is influenced by seasonal changes. The formation of wood occurs in cycles, primarily during the spring and summer seasons.

2. **Types of Wood**: During the spring season, two types of wood are formed:
- **Spring Wood**: This is the wood that forms during the spring season.
- **Early Wood**: This term is synonymous with spring wood.

3. **Characteristics of Spring/Early Wood**: The xylem produced during the spring (spring wood or early wood) is characterized by:
- The presence of numerous large vessels.
- Wider lumen (the hollow part of the vessel).
- A lower amount of fibers compared to wood formed in other seasons.

4. **Comparison with Summer Wood**: In contrast, the wood formed during the summer season is referred to as:
- **Summer Wood** or **Late Wood**: This wood has a reduced amount of xylem and is formed when the activity of the cambium (the layer of tissue responsible for growth) is lower.

5. **Conclusion**: The wood formed during the spring season is correctly identified as both "spring wood" and "early wood." Therefore, the answer to the question is both options 1 and 2.

**Final Answer**: The wood formed during the spring season is called **spring wood** and **early wood**.

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