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Fungicides are chemicals that are used to treat fungal diseases such as rust in plants - HSC - SSCE Biology - Question 23 - 2014 - Paper 1
Question 23
Fungicides are chemicals that are used to treat fungal diseases such as rust in plants. Rust symptoms include orange-brown patches on the underside of leaves. A new... show full transcript
Worked Solution & Example Answer:Fungicides are chemicals that are used to treat fungal diseases such as rust in plants - HSC - SSCE Biology - Question 23 - 2014 - Paper 1
Step 1
Write a valid procedure for your experiment.
Answer
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Obtain 50 plants of the same species infected with the same species of rust.
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Following the instructions on the fungicide pack, treat 25 plants with the fungicide and leave the other 25 plants untreated.
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Keep all the plants in the same conditions, e.g. ambient temperature.
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After the time advised on the pack, examine each plant for number and size of orange-brown patches.
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Record results in an appropriate table.
Step 2
How would you assess the reliability of your experimental design?
Answer
To assess the reliability of the experimental design, I would consider repeating the experiment multiple times to check for consistency in results. Additionally, reviewing how well the sample size represents the larger population, ensuring controls are adequately applied, and noting any potential sources of error are key aspects in evaluating the reliability of the findings.