Our class did an observation and used red food coloring and blue food coloring to see the xylem tubes in celery that we put in colored water. When we looked at the celery, we found something unusual. The celery in the red food coloring looked as if it were dead, but the celery in the blue food coloring looked the same as when we put it in the colored water.

Here is what we saw when we looked at the celery on Monday.

Here is a close -up of three of the celery sticks on Monday. Two in red, one in blue.

The class is now doing an experiment. What we will be doing next is taking 3 cups, one with regular water, one with blue food coloring, and one with red food coloring, to see if blue food coloring preserves celery or if red food coloring kills it. Each will have the same amount of liquid, same size celery sticks, from the same stock and the same bag.