Biology experiment. Air pollution: Does sulphur dioxide affect seed germination?

Authors Avatar

Air pollution: Does sulphur dioxide affect seed germination?

The aim of this experiment is to find out how sulphur dioxide affects seed germination. This will be done by adding different concentrations of sodium metabisulphite to cress seeds, which will be germinated in a polythene bag for a week. The different solutions will be tested by different users, the concentration you need to use will be assigned. After a week, the results will be notated and plotted on a graph. The graph will indicate the severity of sulphur dioxide during seed germination.

Materials required:

  • filter paper
  • Petri dish
  • a pencil
  • watch glass
  • tongs
  • cotton wool
  • Different concentrations of Sodium metabisulphite
  • polythene bag
  • a wire
  • tap water
  • 25 Cress seeds
Join now!

Method:

  1. Get a piece of filter paper and soak it with tap water.
  2. Place the soaked filter paper in a Petri dish.
  3. Gather a pencil, and mark a 5 x 5 grid on the filter paper.
  4. Place 25 cress seeds on the marked grid.
  5. Using tongs, dip a piece of cotton wool in 1% concentrated Sodium metabisulphite solution.
  6. Place the soaked cotton wool on a watch glass.
  7. Place the watch glass containing the sodium metabisulphite and the Petri dish containing the cress seeds beside each other, in a polythene bag.
  8. Tie the bag ...

This is a preview of the whole essay