MitosisWorksheet- Answer the questionsabout the photos below:
Onion root tipphotos at 600x and 1000x taken by Stan Carpenter of Hands-On Labs, Inc.
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1. What phase is this cell undergoing?
2. What happens afterthis phase?
1. The two center side-by-side cells are undergoingtwodifferent phasesof mitosis.
a. What are these phases?
b. Whatdiagnosticfeaturescanhelp you with your decision?
1. What phase is this cell undergoing?
2. How can you tell?
1. This cell has clearly visible chromatids.
a. What'sthenextphasethiscellwill undergo?
b. Wherewillthechromatidsgointhe coming phase?
1. Thecellinthelowercenterisexhibitingsigns of what phase of mitosis?
2. Whatphasedoesitappearthecellaboveis undergoing?
1. Explainwhathappensduringanaphase.
2. Whenthechromatidsseparate,whatis each called?
Questions
A. What is the purpose of mitosis?
B. Why is the cell cycle important for organisms?
C. What role does mitosis play in the growth of an embryo?
D. What is one main differencein the mitoticprocesses between plant and animal cells?
E. Ifthecellthathasundergonemitosisoriginallyhadthediploid(2n)numberofchromosomes, then what number of chromosomes will the nuclei in the two new cells have?
F. Can mitosis ever be usedfor reproduction?
G. What parts of plants are most impactedby mitosis?
H. Why might mitosis be easier to study in the tipof the root?
I. Where else in a plant might you finda large amount of mitoticcell division occurring? J. How might the mitoticindex be applied in agriculture?
K. Whatdidyoucomputetobethemitoticindexofthecombinedsixslides(assumethereare
54totalcells)?IncomparisontotheindexesreflectedinFigure8,fromapproximatelywhicharea
of a root was the sample taken?
esolutions
what_phase_is_this_cell_q.docx
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