Download Mitosis in Animal and Plant Cells Purpose: To observe mitosis in

Mitosis in Animal and Plant Cells
Purpose: To observe mitosis in animal and plant tells and to determine the relative length of each phase.
Materials:
slide of onion root tip mitosis
slide of whitefish blastula mitosis
Word Meanings:
Mitosis- cell division
telo- end
phase- part of cycle, stage
kinesis- division
meta- among, with, after
microscopes
`
inter- between
cyto- cell
pro- before, forward
karyo- nucleus an a- equal quantity
ana- equal quanity
Materials:
1. Write the meaning for each word written in the results number one by using the prefixes and suffixes written
in the methods.
2. Observe the prepared microscope slide of whitefish blastula undergoing mitosis, and for each phase listed in
results number 2 draw in what you see.
3. Observe the prepared microscope slide of onion root tip undergoing mitosis and for each phase listed in
results number 3 draw in what you see.
4. Select region of root tip you want to observe. Look at each cell and record what type of cell it is, do this in a
systematic manner so you don't miss any cell or count the cell twice. Calculate total number of cells observed.
Use this to calculate the percentage of cells in each phase. If a complete cycle of mitosis (including interphase)
takes 960 minutes, use the % to determine the time for each phase to occur. (960 minutes times the percent)
Results:
1. karyo kinesis________________
telo phase ____________________
meta phase ___________________
inter phase - ___________________
cyto kinesis - ______________
prophase - _______________
anaphase - _______________
2. Whitefish blastula:
interphase
prophase
metaphase
anaphase
telophase
3. Onion Root tip:
interphase
prophase
metaphase
anaphase
telophase
4.
PHASE
NUMBER OF CELLS
PERCENTAGE OF
CELL
TIME
Interphase
Prophase
Metaphase
Anaphase
Telophase
Total of all phases
Conclusions:
1. List the different phases of mitosis in order.
2. Does mitosis occur in both animal and plant cells? How do you know?
3. The slides that we observed is a whole bunch of cells in the mitosis process. Each cell is undergoing mitosis
as needed. When we look, (or preserve) the cells at one instant the cells are preserved in the stage that they were
going through. If the majority of the cells are of one phase does this mean that this phase lasted the longest or
shortest?
4. With number 3 in mind which phase lasted the longest?
Discussion:
1. Why is mitosis so important for the organisms?
2. Which cells in the organisms undergo mitosis?
3. Which process occur first karyokinesis or cytokinesis?
4. How can you differentiate the appearance between prophase from metaphase?
5. What are the differences between animal and plant cell mitosis?