In which of the following stages, chromosomes are arranged at equatorial plate?

Options

A. Anaphase
B. Metaphase
C. Prophase
D. Telophase I

Answer

To determine in which stage chromosomes are arranged at the equatorial plate, we need to analyze the different stages of cell division, particularly mitosis. Here’s a step-by-step breakdown:

1. **Understanding Mitosis Stages**: Mitosis consists of several stages: prophase, metaphase, anaphase, and telophase. Each stage has distinct characteristics and functions.

2. **Prophase**: This is the first stage of mitosis. During prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down. However, the chromosomes are not yet aligned at the equatorial plate.

3. **Metaphase**: In this stage, the chromosomes are fully condensed and aligned along the equatorial plate of the cell. This alignment is crucial for the proper separation of chromosomes in the next stage. Therefore, this is the stage where chromosomes are arranged at the equatorial plate.

4. **Anaphase**: This stage occurs after metaphase. During anaphase, the sister chromatids are pulled apart to opposite poles of the cell. At this point, the chromosomes are no longer at the equatorial plate.

5. **Telophase**: This is the final stage of mitosis where the chromosomes reach the opposite poles of the cell and begin to decondense. The nuclear envelope reforms around each set of chromosomes, but again, they are not at the equatorial plate.

6. **Conclusion**: The stage in which chromosomes are arranged at the equatorial plate is **metaphase**.

### Final Answer:
The correct option is **metaphase**.