CSCS Activities‎ > ‎CSCS - Biology‎ > ‎


Introduction: This picture shows onion root tip cells in various stages of the cell cycle.
1,2 - interphase, 3-5 prophase, 6 - metaphase, 7 - early anaphase, 8 - anaphase, 9 - early telophase, 10 - telophase

Directions: Each group will be assigned a microscope photo of an onion root tip listed below. Click on the image to enlarge and count the number of cells in interphase, prophase, metaphase, anaphase and telophase.

Microscope views:  A B C D E F G H 

  • Count the number of cells in your view that are in each of the various stages of mitosis.  
  • Count only those cells that clearly illustrate a nucleus.  
  • After submitting your data, examine the data from the entire class.  
  • Generate a hypotheses about the cell cycle based on the graphs of the class data. 
  • Submit your hypothesis in the quick write provided
  • Discuss your hypotesis in light of the hypotheses of your colleagues
NGSS - Mitosis
  • HS-LS1-4. Use a model to illustrate the role of cellular division (mitosis) and differentiation in producing and maintaining complex organisms. 
  • NGSS Standards

Subpages (10): A B C D E F G H mitosis diagrams Results