Aquatic plant

1
Rising bubbles of oxygen
pipette
Water enriched with NaHCO3
A sharp cut of the stem under water
Aquatic plant
2
Aquatic plant
3
Which is the dependent variable ?
Which is the independent variable ?
4

• What data should be measured ?
• Distance between the centre of the bulb and the
  aquatic plant / cm
• The number of oxygen bubbles per minute
  (replicate and take the average)

5
Precautions
6
Treatment of data
7
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