Which structure produces the gamete bearing plant of moss ?

Options

A. Spore
B. Bud
C. Protonema
D. Zygote

Answer

### Step-by-Step Solution:

1. **Understanding the Plant Structure**: In mosses, the main plant body is known as the gametophyte. This is the structure that produces gametes (sperm and eggs).

2. **Identifying the Origin of Gametophyte**: The gametophyte in mosses does not develop directly from spores. Instead, it originates from a structure called the protonema.

3. **Role of Protonema**: The protonema is a filamentous structure that develops from a spore. It can produce a secondary protonema, which then gives rise to lateral buds.

4. **Formation of Leafy Stage**: These lateral buds develop into the leafy stage of the moss, which is the actual gametophyte that bears the gametes.

5. **Conclusion**: Therefore, the structure that produces the gamete-bearing plant of moss is the **protonema**.

### Final Answer:
The structure that produces the gamete-bearing plant of moss is the **protonema**.

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