Transpiration

Question 1

What is transpiration?

Answer 1

The process in which plants loose water vapour from the surface of the leaves

Question 2

How does transpiration work?

Answer 2

Water evaporates into the air spaces of the leaf then diffuses our through the stomata

Question 3

Name what conditions speed up transpiration and why

Answer 3

Heat- causes water to evaporate quicker
Dry-increase water vapour concentration gradient
Wind-moves water away from the leaf maintaining the concentration gradient

Question 4

Where is most water lost during transpiration

Answer 4

The stomata

Question 5

What time do the stomata close

Answer 5

When it’s dark (carbon dioxide is no longer needed because there is no sunlight)

Question 6

What does a plant do to prevent wilting

Answer 6

When the plant is losing water faster than its being replaced by the roots the stomata can close to prevent wilting

Question 7

How can you measure transpiration

Answer 7

Using a potometer