The formation of cell plate is completed during

Options

A. interphase
B. mitotic phase
C. cell division
D. growth phase

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the completion of the formation of the cell plate, which is a crucial part of cell division in plant cells.

2. **Identifying the Relevant Process**: The formation of the cell plate occurs during cytokinesis, which is the final stage of cell division. Cytokinesis follows karyokinesis, where the nucleus divides.

3. **Differentiating Between Cell Types**: In plant cells, cytokinesis occurs through the formation of a cell plate, while in animal cells, it occurs through the formation of a cleavage furrow. This distinction is important to understand the specific mechanism in plant cells.

4. **Describing the Formation of the Cell Plate**: During cytokinesis in plant cells, vesicles containing cell wall materials gather at the center of the cell. These vesicles fuse to form the cell plate, which expands outward until it fuses with the existing cell membrane, ultimately forming two separate daughter cells.

5. **Determining the Correct Phase**: The question specifies when the formation of the cell plate is completed. Since cytokinesis is the phase where the cell divides and the cell plate forms, the completion of the cell plate formation occurs during this phase.

6. **Final Answer**: Therefore, the formation of the cell plate is completed during cell division, specifically during the cytokinesis stage of the M phase of the cell cycle.

**Conclusion**: The correct answer is option C: cell division.

---