Seeds of Pinus are

Options

A. adaxial, endospermic and polycotyledonous
B. abaxial,monocotyledonous and endospermic
C. hypogeal,endospermic and monocot
D. monocotyledonous,epigeal.

Answer

To answer the question "Seeds of Pinus are:", we need to analyze the options provided and understand the characteristics of Pinus seeds.

### Step-by-Step Solution:

1. **Identify the Seed Type**:
- The seeds of Pinus (a genus of coniferous trees) are known to be **endospermic**. This means they contain endosperm, which is a tissue that provides nutrition to the developing embryo.

2. **Understand Cotyledon Number**:
- Pinus seeds are classified as **polycotyledons**. This indicates that the seeds have more than two cotyledons (seed leaves). In the case of Pinus, they typically have several cotyledons (usually 2-5).

3. **Determine the Surface of Development**:
- The term **adaxial** refers to the upper surface of the ovule or seed. In Pinus, the seeds develop from the adaxial side of the ovuliferous scale.

4. **Clarify Other Terms**:
- The term **perispermic** refers to a type of seed that has perisperm, which is a nutritive tissue derived from the nucellus, present in addition to the endosperm.
- The seeds of Pinus are also described as **perispermic diploid**, meaning they have a diploid number of chromosomes and contain perisperm.

5. **Review Germination Types**:
- Germination can be classified as **hypogeal** (where cotyledons remain below the soil) or **epigeal** (where cotyledons emerge above the soil). Pinus seeds exhibit hypogeal germination.

6. **Conclusion**:
- Based on the characteristics discussed, the correct answer to the question "Seeds of Pinus are" is **adaxial, endospermic, and polycotyledons**.

### Final Answer:
The seeds of Pinus are **adaxial, endospermic, and polycotyledons** (Option A).

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