Using a potometer

To ensure the tubes and xylem fill with water and there is no air......

• The stem is cut above water

• The stem is cut under water

• No need to cut the stem at all

The seal of the stem into the tubing

• Should be loose

• Has to be secure, tight and sealed with vaseline

The leaves are blotted dry to ensure

• More transpiration from leaves

• Less transpiration from leaves

• To cool the leaves

An air bubble can be inserted into the capillary tubing by

• Pulling the capillary tube out and blotting the end

• blowing an air bubble into the capillary tubing

Transpiration rate is measured by measuring

• The distance the bubble moves over time

• The distance the liquid moves over time

• The distance the bubble moves

• The time taken for the bubble to move

What factors will INCREASE the rate of transpiration

• Wind

• Humidity

• Warm temperatures

• Dark