Distinction of individual cells is absent in coenocytic organism

Options

A. Ultothrix
B. Volvox
C. Eshcerichia
D. Rhizopus

Answer

**Step-by-Step Solution:**

1. **Understanding Coenocytic Organisms**: Coenocytic organisms are those that do not have distinct individual cells; instead, they have a continuous cytoplasmic mass with multiple nuclei. This condition is often found in certain fungi and algae.

2. **Identifying the Options**: The question provides four options:
- A. Eulothrix
- B. Volvox
- C. Escherichia
- D. Rhizopus

3. **Analyzing Each Option**:
- **Eulothrix**: This is a green alga that consists of individual cells, not coenocytic.
- **Volvox**: This is also a green alga that forms colonies of individual cells, hence it is not coenocytic.
- **Escherichia**: This refers to Escherichia coli, a bacterium which is unicellular and does not exhibit coenocytic characteristics.
- **Rhizopus**: This is a genus of fungi, commonly known as bread mold, which exhibits a coenocytic structure as it has multiple nuclei within a single cell mass.

4. **Conclusion**: Among the given options, Rhizopus is the only organism that is coenocytic. Therefore, the correct answer is option D, Rhizopus.

**Final Answer**: D. Rhizopus

---