TRIPLE BIO: Gas and Solute Exchange

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What is the main difference between diffusion and osmosis?
Osmosis involves the movement of water.
1 of 6
How is the amount of oxygen, carbon dioxide and water vapour, that enter and leave the leaf, controlled?
Controlled by guard cells, which open and close the stomata to allow or prevent the gasses diffusing in and out.
2 of 6
State the two places where gaseous exchange happens in a leaf.
1. The underside of the leaf. 2. The walls of the cell within a leaf.
3 of 6
Suggest one advantage of leaves having a flattened shape.
It increases the surface area so gas exchange is more efficient.
4 of 6
Give four ways in which alveoli are specialised to maximise gas exchange.
1. Large surface area. 2. Thin cell walls. 3. Good blood supply. 4. Moist lining for dissolving gases.
5 of 6
Water absorbed by the roots is lost by what process.
Diffusion.
6 of 6

Other cards in this set

Card 2

Front

How is the amount of oxygen, carbon dioxide and water vapour, that enter and leave the leaf, controlled?

Back

Controlled by guard cells, which open and close the stomata to allow or prevent the gasses diffusing in and out.

Card 3

Front

State the two places where gaseous exchange happens in a leaf.

Back

Preview of the front of card 3

Card 4

Front

Suggest one advantage of leaves having a flattened shape.

Back

Preview of the front of card 4

Card 5

Front

Give four ways in which alveoli are specialised to maximise gas exchange.

Back

Preview of the front of card 5
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