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Biology
PRACTICAL: Investigating seed germination
| Question | Answer |
|---|---|
| What 5 pieces of apparatus do you need for this experiment? | 1. Test tubes 2. Test tube holder 3. Cress seeds 4. Cotton wool 5. Fridge |
| What do we put in each of the 4 test tubes to start this experiment? | 10 seeds on some cotton wool |
| Describe how each individual test tube should be set up | 1. Leave cotton wool dry 2. Add water to cotton to make it moist 3. Add water to cover cotton wool, then put a layer of oil on top 4. Add water to cotton wool to make moist, then place it in the fridge |
| How long should the test tubes be left? | 3-5 days |
| What must be measured at the end of the experiment? | How many seeds germinated |
| What are we changing in this experiment? | The abiotic conditions for the seeds |
| What 2 things must be kept the same in this experiment? | 1. The temperature of the tubes not in the fridge 2. The type of water used |
| What about the seeds must we control? | Make sure they all come from the same parent plant |
| Which set of seeds will be the only set to germinate? | Those with all conditions present |
| What does this experiment prove? | Germination only occurs when ALL conditions are correct |
Created by:
JoeMather
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