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CIE Categories Archives: 6. Transport in flowering plants

6. Transport in plants

6.1 Water and ion uptake.

1 . Ion is taken up into the plants by:

  • Osmosis.
  • Active transport.

2 . Water is taken up into the plants by:

  • Root pressure.
  • Transpiration pull

6.2 Transpiration and translocation.

1 . Transpiration is the process by which water is lost from the leaves of the plants.Factors affecting the rate of transpiration:2. Humidity.• Temperature.• Wind.• Light.•

2 . Factors affecting the rate of transpiration:Humidity.• Temperature.• Wind.• Light.•

  • Humidity.
  • Temperature.
  • Wind.
  • Light.

3 . Light:

  • The rate of transpiration will be high when there is light.

4 . Temperature:

  • The higher the temperature, the higher the rate of transpiration.

5 . Humidity & wind:

  • The lower the humidity, the higher the rate of transpiration.
  • The wind blows away the water vapour surrounding the leaves, in other words, the humidity surrounding the leaves become low, so the rate of transpiration is high.

6 . Higher rate of transpiration when it is:

  • Windy.
  • Hot.
  • Less humid.
  • Daylight.

7 . How to measure the rate of transpiration:

  • Using a potometer

8 . Translocation is the process by which food substances(glucose) are transported to other parts of the plant through the phloem.

9 . The foods are transported to other parts of the plant because:

  • For energy.
  • To make new cells.

 

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