Which one is not a true moss-

Options

A. Nest moss
B. Funaria
C. Sphagnum
D. Polytrichm

Answer

To determine which option is not a true moss, we need to analyze the provided options: Nest moss, Pheneria, Siphonigum, and Polytrichum.

### Step-by-Step Solution:

1. **Understanding Mosses**:
- Mosses belong to the group of plants known as bryophytes. They are characterized by their dependence on water for sexual reproduction and have a dominant haploid (gametophytic) stage in their life cycle.

2. **Identifying True Mosses**:
- True mosses are classified under the class Bryopsida. Common examples include Polytrichum and Sphagnum (often referred to as peat moss).

3. **Analyzing the Options**:
- **Nest Moss**: This is not a recognized name in the classification of true mosses. It does not belong to the Bryopsida class.
- **Pheneria**: This is a type of true moss.
- **Siphonigum**: This is also classified as a true moss.
- **Polytrichum**: This is a well-known example of a true moss.

4. **Conclusion**:
- Since Nest moss does not correspond to any known true moss, it is the correct answer to the question of which one is not a true moss.

### Final Answer:
The option that is not a true moss is **Nest moss**.

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