Activity preparation time:5 min and let stand 2 days for the experiment to come out.
What will you learn?: In this experiment we can see how water and minerals are transported by the leaves through tubes called Xylems. Water, having dye, stains the ducts of color.
Do the experiment and you will be able to observe what happens …
- 2 twigs with enough celery leaves
- Red food coloring
- Blue food coloring
- 2 glasses
- Tap water
Steps to follow:
1. Grab 2 celery sprigs like the ones you see in the photo. It is best to have a slightly larger stem and leaves so that you can observe the result well.
2. Put water in the 2 glasses. We put half a glass of water.
3. In the 1st glass put the red dye and mix it with water. Then put the blue dye in the 2nd glass and mix. Put enough dye in the water to make it a vivid color. We have put half a tube of dye.
4. Now put a sprig of Celery in each Glass. It will look like this:
It will look like this: You are watching what happens these 2 days.
6. What happened? To see it, cut the stem and leaves and see what color is left inside, for the Xilemas.
Is there any celery that looks clearer in color than the other?
After waiting 2 days, we have the celery so blue
And to see what happened, let’s cut it:
As you can see, both red and blue celery are dyed inside and out.
Blue is more colorful than red.
Let’s see what happened.
Plants, like people, have small veins, called xylems, that help them carry water and minerals. Plants need photosynthesis with water and minerals to survive.
How does the water rise?
The water rises through the Xylems, against the force of gravity, thanks to the characteristics of the water molecule of adhesion and cohesion.
Water molecules have a positive and negative charge, which causes the molecules to attract each other.
Due to its characteristic water, it adheres easily to surfaces. This is called cohesion.
When the water adheres to the surfaces in the form of tube or the xylems, the water is able to raise by the cohesion and adhesion effect, of uniting a molecule with another one.
This phenomenon is called capillarity because it rises through the capillaries of the plant.
Keep experimenting …….