Which of the following is part of mitosis in cells of seed plants ?

Options

A. Centrioles
B. Asters
C. Spindles
D. Cleavage furrows

Answer

To determine which of the following is part of mitosis in the cells of seed plants, we need to analyze the given options:

1. **Centrioles**
2. **Asters**
3. **Spindles**
4. **Cleavage furrow**

### Step-by-Step Solution:

**Step 1: Understand Mitosis**
Mitosis is the process of cell division that results in two genetically identical daughter cells. It involves several stages: prophase, metaphase, anaphase, and telophase.

**Step 2: Analyze Each Option**
- **Centrioles**: These are cylindrical cell organelles involved in the organization of the mitotic spindle and in the completion of cytokinesis. While they play a role in cell division, they are not directly involved in the process of mitosis itself.

- **Asters**: These are star-shaped structures that form around the centrosome during mitosis. They help in the organization of the spindle fibers but are not directly involved in the separation of chromosomes.

- **Spindles**: Spindle fibers are crucial in mitosis. They are microtubule-based structures that help separate the chromosomes during the metaphase and anaphase stages of mitosis. They ensure that each daughter cell receives an identical set of chromosomes.

- **Cleavage Furrow**: This is a structure that forms during cytokinesis, the final stage of cell division, after mitosis has completed. It is not part of mitosis itself.

**Step 3: Identify the Correct Answer**
Based on the analysis, the correct answer is **C. Spindles**. Spindles are essential for the process of mitosis in seed plants as they facilitate the separation of chromosomes.

### Final Answer:
The part of mitosis in cells of seed plants is **C. Spindles**.

---