Biology

16. Investigation into transpiration using a simple potometer

  • 00:33 Why must the end of the stalk be cut underwater before assembly?
  • 00:49 Why is Vaseline applied to the joints of the potometer?
  • 01:31 Which metabolic processes use water?

  • potometer

  • small beaker of water

  • freshly cut plant stems (cut end in water)

  • clamp stand

  • scissors / sharp knife

  • stopclock

  • vaseline

  • paper towel

  • bowl of water

Hazard Risk Control measure

Scissors / sharp knife

Cuts to skin

Cut downwards and away from body