The seed of Pinus sp. Is

Options

A. Uneconomic and nonendospermic
B. Abaxial and rounded
C. Adaxial and endospermic
D. Hypogeal and monocotyledonous

Answer

To solve the question regarding the characteristics of the seed of Pinus sp., we will analyze each option provided and determine the correct answer based on the known botanical features of Pinus seeds.

### Step-by-Step Solution:

1. **Understanding Seed Characteristics**:
- Pinus species (pine trees) produce seeds that have specific characteristics. It's important to know whether they are endospermic or non-endospermic, and their orientation (adaxial or abaxial).

2. **Evaluating the Options**:
- **Option 1**: "uneconomic and non-endospermic"
- This is incorrect. Pinus seeds are economic and are indeed endospermic, meaning they contain endosperm at maturity.

- **Option 2**: "abaxial and rounded"
- This is also incorrect. The seeds of Pinus are not typically described as rounded, and the term "abaxial" refers to the side away from the axis, which is not characteristic of Pinus seeds.

- **Option 3**: "adaxial and endospermic"
- This is correct. The seeds of Pinus are indeed endospermic, meaning they contain endosperm, and they are adaxial, which refers to the upper surface of the seed.

- **Option 4**: "hypogeal and monocotyledonous"
- This is incorrect. Pinus seeds are not monocotyledonous; they are gymnosperms and typically have multiple cotyledons (polycotyledonous).

3. **Conclusion**:
- After evaluating all the options, the correct answer is **Option 3: adaxial and endospermic**.

### Final Answer:
The seed of Pinus sp. is **adaxial and endospermic**.