What did we learn from our onion root tip

investigation?

Get your lab folder. Look at the reflection you made for HW. Identify 3 areas for improvement and target

one as your goal for this lab!

Starting Activity:

Switch your introductions with a partner: Did they identify knowledge of the cell cycle

and mitosis? Circle key vocab they used. If you think they are missing terms write them on their page.

Did they show knowledge of what an onion root tip is and why the two areas (cortex and meristem) might differ?

Did they link the information about mitosis and onion root tips to the purpose of the lab (I will ask to share excellent examples here!)

Introduction Peer Edit

From yesterday: Where did you see more cells? The cortex or

the meristem? Why is this information important? Where might you discuss this information in your lab?

Why did one group count 40 cells in the cortex and another group counted 156? Is this a mistake? If not, what might it suggest about the root tips? Would you change anything about the experiment? Where might you discuss this in your lab?

Data Analysis

Find a partner who was not in your lab group.

Use the Excel spreadsheet to sum each column for the cortex and meristem.

Using the directions on your lab sheet, make a pie chart for each.

Organize the pie charts in a document and write a trend that analyzes what the two pie charts show.

Today:

Construct a table to show your individual data and the class totals. What trend does your table analyze?

You will also need pie charts for your individual data. What trend do your individual pie charts show? Is it the same trend as the class data?

Use your data and numbers to explain the conclusion you are to draw about the cortex and meristem.

What theme applies to this lab?

On your own:

Tuesday March 11

Tonight: Make your individual pie charts and use your data to write part 1 & 2 (response to hypothesis and error) of your conclusion!

Lab Report Due: