B3 1.9: Transpiration.

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

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