TA transpiration.notebook
1 April 14, 2016
Apr 1214:46
Potometers. Testing to see for transpiration.
we are learning:
What transpiration is and how it happens.
The different Potometers that have been used through time.
To set up fair tests to show transpiration
Apr 1215:00
Water moves into the root hair cell by a process called osmosis.
Apr 1215:03
Water moves from the root hair to the xylem by a process called O
Apr 1215:07
Water flows in 1 direction, up the xylem (it also flows in the phloem, but this is 2 way).
Apr 1215:12
The water travels into the leaf via the xylem
Water moves out of the leaf by the stomata. Controlled by the guard cells.
Apr 1215:19
Different types of potometer
TA transpiration.notebook
2 April 14, 2016
Apr 1215:20
An experiment to show the transpiration of a leaf.
Method.
1) Collect a twig, from a tree, which has more than 2 leaves on it.
2) Collect a twig with no leaves on it 3) Collect a twig with only 1 leaf on it.
4) Place each twig into a test tube 5) Fill each test tube 2/3rds full 6) Cover the water with a layer of oil.
7) Measure the height of the water and oil. Write it down in the results table.
8) Place all 3 test tubes into a test tube holder.
9) Label each test tube with your groups name in permanent marker.
Write a hypothesis tin your book, to explain what you think will happen in this experiment.
Apr 1215:27
Type of twig Height of water and oil before
Height of oil and water after No leaves
1 leaf
__ leaves. __ leaves.
Results
