Which of the following is coenocytic?

Options

A. Vaucheria
B. Centaurea
C. Chlamydomonas
D. Pseudomonas

Answer

To determine which of the following options is coenocytic, we need to understand what coenocytic means and analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Coenocytic**:
- Coenocytic refers to a type of cellular organization where the organism has multiple nuclei within a single cell. This is often seen in certain algae and fungi.

2. **Analyzing the Options**:
- **Option 1: Voucheria**:
- Voucheria is an alga that belongs to the group Xanthophyceae. It is known to be coenocytic because it has a multinucleate structure.
- **Option 2: Sanctuaria**:
- Sanctuaria is not commonly recognized in the context of coenocytic organisms. It is likely a plant or a non-coenocytic organism.
- **Option 3: Chlamydomonas**:
- Chlamydomonas is a unicellular green alga. Being unicellular, it cannot be coenocytic, as it does not have multiple nuclei within a single cell.
- **Option 4: Pseudomonas**:
- Pseudomonas is a genus of bacteria, and like Chlamydomonas, it is unicellular. Therefore, it cannot be coenocytic.

3. **Conclusion**:
- After analyzing all options, the only organism that is coenocytic is **Voucheria**.

### Final Answer:
The correct answer is **Voucheria**.