What are the independent, dependent, and control variables in the germination experiment?

  1. Independent variable - Environmental condition such as moisture level or temperature.
  2. Dependent variable - Number of germinated seeds.
  3. Control variables - Type of seeds, number of seeds per tube, duration of experiment.

Answer in your head, out loud, or on paper, then tap the card to flip.

What equipment is needed for the germination experiment?

  1. Boiling tubes
  2. Fridge
  3. Incubator
  4. Cotton wool
  5. Seeds (cress works well)

Answer in your head, out loud, or on paper, then tap the card to flip.

What is the purpose of using dry cotton wool in one of the boiling tubes in the germination experiment?

The dry cotton wool is used to create a dry environment to test the effect of moisture on germination.

Answer in your head, out loud, or on paper, then tap the card to flip.

During the germination practical, what is the purpose of adding a layer of oil on top of water in the boiling tubes?

To prevent oxygen getting to the seeds.

Answer in your head, out loud, or on paper, then tap the card to flip.