Mitosis question?

Question

I have 3 questions:

1. How do the cells of the meristematic area differ from the mature cells of the root?

2. Why are plant root tip cells and animal blastula cells user for viewing cell division?

3. Why do the cells that you see under the microscope not continue to devide?

I would be very grateful. Thanks.

Answer 1

1. Meristematic cells are actively engaged in the cell cycle. They are smaller, so their nuclei "look" big in comparison to the size of the cell. The meristematic area has most cells in interphase, but the stages of mitosis and evidence of cytokinesis are all visible.
2. These cells are actively growing and dividing.
3. The cells on a stained microscope slide are usually not living. If you just made the slide, some of them might still be alive, but they are cut off from their supplies of food, water, and oxygen.