Centriole/centrosome takes part in

Options

A. Nucleolus formation
B. Start of cell division
C. Cell plate formation
D. Spindle formation

Answer

**Step-by-Step Solution:**

1. **Understanding the Centrosome and Centrioles**: The centrosome is a cellular organelle that serves as the microtubule organizing center of the cell. It consists of two centrioles positioned at right angles to each other.

2. **Composition of Centrioles**: Each centriole is made up of a protein called tubulin, which is essential for the formation of microtubules.

3. **Function During Cell Division**: The primary role of the centrosome and its centrioles is to organize microtubules, which are crucial for the formation of the spindle apparatus during cell division.

4. **Spindle Formation**: During cell division (mitosis and meiosis), the centrioles help in the formation of the spindle fibers that pull the chromatids apart to ensure proper distribution of genetic material to the daughter cells.

5. **Conclusion**: Based on the functions of the centrosome and centrioles, the correct answer to the question is that they take part in spindle formation during cell division.

**Final Answer**: Centriole/centrosome takes part in spindle formation.

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