Stem develops from ________ of the embryo of a germinating seed.

Options

A. Radicle
B. Plumule
C. Pedicel
D. Pneumatophore

Answer

To answer the question "Stem develops from ________ of the embryo of a germinating seed," we need to identify the correct part of the embryo that gives rise to the stem during germination.

### Step-by-Step Solution:

1. **Understanding the Embryo Structure**: The embryo of a seed consists of several parts, including the radical, plumule, and cotyledons. Each of these parts has a specific role in the development of the plant.

2. **Identifying the Radical**: The radical is the part of the embryo that develops into the root system. It is not responsible for forming the stem.

3. **Identifying the Plumule**: The plumule is the part of the embryo that develops into the shoot system, which includes the stem and leaves. This is the key part we are looking for.

4. **Understanding Other Options**:
- **Pedicel**: This is the stalk of an individual flower and does not contribute to the formation of the stem.
- **Nematophore**: These are specialized roots found in certain plants (like mangroves) and are not related to stem development.

5. **Conclusion**: Since the plumule is responsible for developing into the shoot system, which includes the stem, the correct answer to the question is that the stem develops from the **plumule** of the embryo of a germinating seed.

### Final Answer:
Stem develops from **plumule** of the embryo of a germinating seed.

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