A barrel shaped structure organised at interzonal region by remaining spindle fibers at the end of telophase is

Options

A. Tonoplast
B. Phragmoplast
C. Mitoplast
D. Tyloses

Answer

To solve the question about the barrel-shaped structure organized at the interzonal region by remaining spindle fibers at the end of telophase, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific structure that forms during the cell division process, particularly at the end of telophase.

2. **Identify Key Terms**: The key terms in the question are "barrel-shaped structure," "interzonal region," "remaining spindle fibers," and "telophase."

3. **Analyze the Options**:
- **Tonoplast**: This is the membrane surrounding a vacuole in plant cells. It is not a barrel-shaped structure and does not relate to the interzonal region.
- **Fremoplast**: This is a cylindrical structure formed during plant cell division, specifically during cytokinesis. It is organized by arrays of actin filaments and microtubules and acts as a scaffold for cell plate assembly at the interzonal region.
- **Mytoplast**: This refers to a mitochondrion with its outer membrane stripped off. It does not relate to the structure described in the question.
- **Ptylosis**: These are outgrowths of xylem parenchyma cells found in secondary hardwoods, unrelated to the context of cell division.

4. **Determine the Correct Answer**: Based on the analysis, the correct answer is **Fremoplast**. It is the barrel-shaped structure organized at the interzonal region by remaining spindle fibers at the end of telophase.

5. **Conclusion**: The answer to the question is **Fremoplast**.