Example of Multinucleate decomposer organism is

Options

A. (a) Pelomyxa
B. (b) Physarum
C. (c) Dictyostelium
D. (d) Arcella

Answer

To solve the question regarding the example of a multinucleate decomposer organism, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify an organism that is both multinucleate and acts as a decomposer.

2. **List the Given Options**: The options provided are:
- A. Pelomyxa
- B. Physarium
- C. Dictyostelium
- D. Arcella

3. **Analyze Each Option**:
- **Pelomyxa**: This organism is multinucleate but is not a decomposer.
- **Physarium**: This is a type of slime mold that can be multinucleate during its plasmodium stage and is a decomposer.
- **Dictyostelium**: This organism is a slime mold and is a decomposer, but it is not multinucleate.
- **Arcella**: This is another amoeba that is multinucleate but not a decomposer.

4. **Identify the Correct Answer**: From the analysis, the only organism that is both multinucleate and a decomposer is **B. Physarium**.

5. **Conclude the Answer**: Therefore, the answer to the question is **B. Physarium**.