B3 1.9: Transpiration.

All information was taken directly from the AQA revision guide with only the key points from B3 1.9.

?
  • Created by: JSpencer
  • Created on: 03-03-16 21:22
What is the transpiration stream?
The movement of water through the plant.
1 of 8
Where do plants take up water?
Through their roots.
2 of 8
What happens to the water in the plant?
It passes through the plant to the leaves.
3 of 8
What happens to the water in the leaves?
It evaporates through the leaf cells and the water vapour diffuses through the stomata.
4 of 8
Why would the plant dehydrate?
If the water evaporation is faster than the water uptake by the roots.
5 of 8
When is evaporation more rapid?
On a hot, dry, windy or bright conditions day.
6 of 8
What can guard cells do?
Close to prevent excessive water lose.
7 of 8
Why can wilting help?
Reduce water loss by the leaves collapsing and hang down which reduces the surface area.
8 of 8

Other cards in this set

Card 2

Front

Where do plants take up water?

Back

Through their roots.

Card 3

Front

What happens to the water in the plant?

Back

Preview of the front of card 3

Card 4

Front

What happens to the water in the leaves?

Back

Preview of the front of card 4

Card 5

Front

Why would the plant dehydrate?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Exchange of materials resources »