Best material for the study of mitosis is

Options

A. Tubulin
B. Root tip
C. Leaf tip
D. Ovary

Explanation

**Step-by-Step Solution:**

1. **Understanding Mitosis**: Mitosis is the process of cell division that results in two genetically identical daughter cells from a single parent cell. It is essential to study this process in cells that are actively dividing.

2. **Identifying Suitable Materials**: To study mitosis, we need to select materials that contain actively dividing cells. The options given are tubulin, root tip, leaf tip, and ovary.

3. **Eliminating Irrelevant Options**:
- **Ovary**: This is primarily involved in meiosis (the process of cell division that produces gametes), not mitosis. Therefore, it is not suitable for studying mitosis.
- **Tubulin**: Tubulin is a protein that forms microtubules, which are part of the cytoskeleton. It does not represent cells or tissue and thus cannot be used to study mitosis.

4. **Considering the Remaining Options**:
- **Root Tip**: Root tips contain meristematic tissues, which are regions of actively dividing cells. This makes them ideal for studying mitosis.
- **Leaf Tip**: While leaf tips also contain dividing cells, root tips are more commonly used in laboratory settings for studying mitosis due to their easier accessibility and clear visibility of cell division stages.

5. **Conclusion**: The best material for the study of mitosis is the **root tip**, particularly from plants like onions, where the tips of the roots are used to observe the stages of mitosis.

**Final Answer**: Root tip

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