Third And Fourth Class
Did you ever wonder how plants “drink” their water?
The pupils of 3rd and 4th class were wondering about this so we decided to investigate further.
To carry out our experiment we got the following
- 1 white carnation
- 1 stick of celery with leaves
- Red food colouring
- 2 plastic cups
- Water
- A marker
What To Do
1.Half fill each glass with water
- Add enough red food colouring to the two cups of water to make two dark red glasses of water. You now have two cups of red water.
- Cut the stem off each plant about 1cm from the end.
- Place the celery stick into one glass of water.
- Place the white carnation into the other glass of water.
- Mark the level of water in each glass with your marker.
7.Leave the two cups for a day or two on a shelf.
What happened?
The carnation’s flowers turned red. The teacher cut through the celery stick and we could will see the inside of the thin tubes marked red.
Also we noticed thin red lines of coloured water running the length of the celery stalk. We also could see red in the leaves of the celery.
Over time the level of water in both cups dropped.
Why did this happen?
This is because the coloured water from the glasses has moved up through the thin tubes in the plants (you can see these in the celery).The water is then transported around the petals of the carnation and leaves of the celery.
