The plant body is thalloid in

Options

A. Salvinia
B. Marchantia
C. Funaria
D. Sphagnum.

Answer

To determine which plant has a thalloid body among the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the term "thalloid":**
- A thalloid plant body is one where the structure does not have differentiated roots, stems, or leaves. Instead, the plant body is a simple, undifferentiated mass.

2. **Analyze the options:**
- **Salvinia:** This is a type of fern. Ferns have distinct roots, stems, and leaves, so they do not have a thalloid body.
- **Mercantia:** This is a type of liverwort. Liverworts are known for having a thalloid structure where the plant body is not differentiated into roots, stems, and leaves.
- **Funaria:** This is a type of moss. Mosses typically have a more complex structure with distinct leaf-like structures, so they do not have a thalloid body.
- **Sphagnum:** This is another type of moss, also known as peat moss. Like Funaria, Sphagnum has distinct structures and does not exhibit a thalloid body.

3. **Identify the correct answer:**
- Based on the analysis, the only option that has a thalloid body is **Mercantia**.

### Final Answer:
The plant body is thalloid in **Mercantia**.