The 'wing' of Pinus seed is derived from

Options

A. Testa
B. Testa and tegmen
C. Surface of ovuliferous scale
D. All the obove.

Answer

To determine the origin of the 'wing' of the Pinus seed, we can analyze the options provided and understand the structure of the Pinus seed.

### Step-by-Step Solution:

1. **Understanding the Structure of the Pinus Seed**:
- The Pinus seed has a wing that aids in its dispersal. This wing is not just a random structure but is derived from specific parts of the seed.

2. **Analyzing the Options**:
- **Option 1: Testa**: The testa is the outer seed coat. It does not contribute to the formation of the wing.
- **Option 2: Tegmen**: The tegmen is the inner layer of the seed coat, which also does not form the wing.
- **Option 3: Surface of the Ovuliferous Scale**: The ovuliferous scales are structures that bear the ovules in conifers. The wing of the Pinus seed is derived from the surface tissue of these scales.
- **Option 4: All of the Above**: This option suggests that all previous options contribute to the wing, which is incorrect.

3. **Identifying the Correct Answer**:
- From the analysis, the correct answer is **Option 3: Surface of the Ovuliferous Scale**. The wing is specifically formed from the dorsal surface of the ovuliferous scale.

4. **Conclusion**:
- Therefore, the 'wing' of the Pinus seed is derived from the surface tissue of the ovuliferous scale, particularly from its dorsal surface.

### Final Answer:
The 'wing' of the Pinus seed is derived from the **surface of the ovuliferous scale**.

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