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Investigating the effect of environmental factors on seed germination.
Method
Method to Investigate Seed Germination
1. Place 10 seeds on moist filter paper in a Petri dish. 2. Keep the Petri dish in a warm place (25°C). 3. Observe and record the number of seeds that germinate after 3 days. 4. Repeat the experiment with seeds kept in a cold place (5°C). 5. Ensure all other conditions (water, oxygen) are the same.
- a[1]
Identify the independent variable in this investigation.
Aim for approximately 1 distinct marking point.
- b[2]
Describe how you would ensure that oxygen is available to the seeds during the experiment.
Aim for approximately 2 distinct marking points.
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