Spindle fibres arise from

Options

A. Centriole
B. Centromere
C. Nucleus
D. Mitochondria

Explanation

**Step-by-Step Solution:**

1. **Understanding Spindle Fibers**: Spindle fibers are essential components of the cell division process, particularly during mitosis and meiosis. They help in the movement of chromosomes.

2. **Identifying the Origin of Spindle Fibers**: Spindle fibers are produced from structures known as centrioles, which are found within the centrosome. The centrosome is the microtubule-organizing center of the cell.

3. **Structure of Centrioles**: Centrioles are cylindrical structures made up of microtubules. During cell division, they play a crucial role in forming the spindle apparatus.

4. **Evaluating the Options**:
- **Option 1: Centriole** - This is the correct answer as spindle fibers arise from centrioles.
- **Option 2: Centromere** - This is incorrect; the centromere is the region where two sister chromatids are joined and does not produce spindle fibers.
- **Option 3: Nucleus** - This is also incorrect; the nucleus contains the genetic material but does not produce spindle fibers.
- **Option 4: Mitochondria** - This is incorrect; mitochondria are known as the powerhouse of the cell and are not involved in the formation of spindle fibers.

5. **Conclusion**: Based on the analysis, the correct answer is that spindle fibers arise from the **centriole**.

**Final Answer**: Spindle fibers arise from **centriole**.

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