Observation of Mitosis in a Plant Cell
Table 1: Mitosis Predictions
| Predictions | |
| “Supporting Evidence” |
Table 2: Mitosis Data
| Stage | Number of Cells in Each Stage | Total Number of Cells | Calculated % of Time Spent in Each Stage |
| Interphase | |||
| Prophase | |||
| Metaphase | |||
| Anaphase | |||
| Telophase | |||
| Cytokinesis |
Insert photos of your drawings of a dividing cell in the appropriate area for each stage of the cell cycle (please include your name and access code handwritten in each of the sketch photos):
Interphase:
Prophase:
Metaphase:
Anaphase:
Telophase:
Cytokinesis:
Post-Lab Questions
1. Label the arrows in the slide image below with the appropriate stage of the cell cycle.
| Structure | Identity |
| A | Click here to enter text. |
| B | Click here to enter text. |
| C | Click here to enter text. |
| D | Click here to enter text. |
| E | Click here to enter text. |
| F | Click here to enter text. |
2. In what stage were most of the onion root tip cells? Based on what you know about cell cycle division, what does this imply about the life span of a cell?
3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle?
4. As a cell grows, what happens to its surface area to volume ratio? (Hint: Think of a balloon being blown up). How does this ratio change with respect to cell division?
5. What is the function of mitosis in a cell that is about to divide?
6. What would happen if mitosis were uncontrolled?
7. How accurate were your time prediction for each stage of the cell cycle?’