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Mitosis Lab printer
versions: MS doc.
worksheet in
pdf.
Name:_________________________________________
Mitosis and Asexual Reproduction
Purpose:
1. Observe and identify the stages of mitosis
2. Observe examples of asexual reproduction
Materials:
Prepared slides of onion root tips
Prepared slides of hydra budding
Prepared slides of paramecium fission
Compound microscope
Procedure:
Part A
11. Examine a prepared slide of an onion
root tip using a compound microscope. Position the
 slide so that you
are looking at the rounded root tip.
12. Look for the cells in the different
phases of mitosis. You must be patient and keep looking
because it is sometimes
hard to find cells in the different stages.
13. Draw a cell that is in interphase and
two other cells that are in different stages of mitosis
(prophase, metaphase,
anaphase, or telophase). You may need to move the slide around to find
these different cells.
14. Label your diagram with the name of
the stage that the cell is in.
15. Also label any organelles that you
draw such as cell wall, cell membrane, nucleus, nuclear
membrane, and chromosomes.
16. Before removing the slide, read over
analysis questions #1-5 to make sure you do not need
additional information
from the slide to answer the questions.Part B
17. Look up “budding” and “binary
fission” in your textbook. (to know what you are looking
for in the following
slides)
18. Examine a prepared slide of a hydra
budding.
19. Draw what you see and label the “bud”.
10. Examine a prepared slide of paramecium fission. You may have to
move the slide around until
you find a paramecium
that is undergoing fission.
11. Draw a paramecium that you see undergoing fission
Data:
Part A
Part B
Analysis – Answer the following questions.
1. Why is it a good idea to observe root tips when studying the stages
of mitosis? (may want to look up root tips [root cap] in your text)
2. When observing onion root tips, in what stages of mitosis were the
greatest number of cells?3. Describe the three stages of mitosis that
you observed in an onion root tip and explain why you believe they represent
that particular stage. What observations of the cells tell you that the
cell is in that particular stage?
4. Do you think the relative length of time spent in the various stages
of mitosis in onion would be similar to, or different from, those in an
animal? Explain your answer. How could you verify your answer?
5. Cancerous tissue is made up of cells undergoing rapid, uncontrolled
cell division. Do you think the procedure of counting cells in mitosis
could be used to identify cancerous tissue? Explain your answer.
6. What is budding?
7. How did you know that the part you labeled as the “bud”
on the hydra was that particular part?
8. How would you describe fission as you observed it in paramecium?
Use the links on the left to access: notes, examples,
and worksheets for the course. Same are provided
in pdf (portable document format). You will need a pdf
reader to open them. You can get a viewer for free here.
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