If a moss protonema is developed from few cells of the moss capsule wall, then most probably it will be

Options

A. Haplid
B. Diploid
C. Triploid
D. Polyploid

Explanation

To solve the question regarding the development of a moss protonema from a few cells of the moss capsule wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Protonema**:
- Protonema is the initial stage in the life cycle of mosses. It is a filamentous structure that develops from spores.

2. **Identifying the Source of Protonema**:
- The question states that the protonema is developed from a few cells of the moss capsule wall. The moss capsule is part of the sporophyte generation.

3. **Determining the Ploidy Level**:
- In mosses, the sporophyte (which includes the capsule) is diploid (2n). This means that the cells in the capsule wall are also diploid.

4. **Germination Process**:
- When a haploid spore germinates, it develops into a protonema. However, if the protonema is formed from diploid cells of the capsule wall, it indicates that the cells are not directly forming the protonema.

5. **Conclusion**:
- Since the protonema is derived from the diploid cells of the capsule wall, it suggests that the protonema itself will also be diploid. Therefore, the correct answer is that the moss protonema developed from the capsule wall cells will most probably be diploid (2n).

### Final Answer:
The moss protonema developed from a few cells of the moss capsule wall will most probably be **diploid (2n)**.

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