Fern : Prothallus : : Moss : …………..

Answer

To solve the analogy Fern : Prothallus : : Moss : ………….., we need to understand the relationship between the terms in the analogy.

### Step-by-Step Solution:

1. **Identify the relationship in the first pair (Fern : Prothallus)**:
- Ferns have a gametophytic stage known as the prothallus. The prothallus is a haploid structure that produces gametes (male and female).

2. **Understand the corresponding structure in Moss**:
- Mosses also have a gametophytic stage, similar to ferns. In mosses, this structure is known as the gametophore.

3. **Define the term gametophore**:
- The gametophore in mosses is the structure that bears the gametes. It is also haploid and plays a crucial role in the reproduction of mosses, just like the prothallus does in ferns.

4. **Complete the analogy**:
- Since the prothallus is to ferns as the gametophore is to mosses, we can conclude that the answer to the analogy is "gametophore".

### Final Answer:
Moss : Gametophore

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