B2 Transpiration And Stomata Flashcards
1
Q
Phloem tubes do what?
A
Transport food
2
Q
Xylem tubes do what?
A
Take water up
3
Q
What is transpiration?
A
The loss of water from the plant
4
Q
What causes transpiration?
A
Evaporation and diffusion.
5
Q
Transpiration rate is affected by 4 factors
A
Light intensity
Temperature
Air flow
Humidity
6
Q
Light intensity
A
The brighter the light, the greater the transpiration rate. As the stomata closes due to no light there cannot be any photosynthesis.
7
Q
Temperature
A
The warmer it is the faster the transpiration.
8
Q
Air flow
A
The better the air flow the more transpiration that occurs. If the air flow is poor the less the water vapour diffuses.
9
Q
Humidity
A
The drier the air the faster transpiration happens.
10
Q
Guard cells are adapted to do what?
A
Open and close stomata.
