which of the following is not correct

Options

A. early wood is characterised by a large number of xylary elements
B. late wood is characterised by a large number of xylary elements
C. early wood is characterised by vessels with broader cavities
D. late wood is characterised by vessels with narrower cavities.

Answer

To solve the question "Which of the following is not correct?", we need to analyze the statements provided regarding early wood and late wood. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Definitions
- **Early Wood**: This is formed during the spring season when cambium activity is high. It is characterized by a large number of xylary vessels with wider cavities.
- **Late Wood**: This is formed during the autumn or unfavorable conditions when cambium activity decreases. It has fewer xylary elements and narrower cavities.

### Step 2: Analyze Each Statement
1. **Statement 1**: "Early wood is characterized by a large number of xylary elements."
- This statement is true. Early wood does have a large number of xylary elements.

2. **Statement 2**: "Late wood is characterized by a large number of xylary elements."
- This statement is false. Late wood actually has fewer xylary elements compared to early wood.

3. **Statement 3**: "Early wood is characterized by vessels having broader cavities."
- This statement is true. Early wood has vessels with broader cavities.

4. **Statement 4**: "Late wood is characterized by vessels having narrower cavities."
- This statement is true. Late wood has vessels with narrower cavities.

### Step 3: Identify the Incorrect Statement
- After analyzing all statements, we find that **Statement 2** is the incorrect one, as it incorrectly states that late wood has a large number of xylary elements.

### Conclusion
The answer to the question "Which of the following is not correct?" is **Statement 2**.

---