The diagram shows apparatus used in an investigation to measure the rate of photosynthesis in Elodea (pondweed) at different wavelengths of light - Scottish Highers Biology - Question 9 - 2018
Question 9
The diagram shows apparatus used in an investigation to measure the rate of photosynthesis in Elodea (pondweed) at different wavelengths of light.
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Worked Solution & Example Answer:The diagram shows apparatus used in an investigation to measure the rate of photosynthesis in Elodea (pondweed) at different wavelengths of light - Scottish Highers Biology - Question 9 - 2018
Step 1
1. Use a measuring cylinder with a narrower diameter.
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Answer
Using a narrower measuring cylinder can increase the accuracy of measurements by reducing the margin of error in the volume of gas collected.
Step 2
2. Repeat the experiment several times and take averages.
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Answer
Repeating the experiment helps to account for random errors and ensures that the results are consistent, thus improving reliability.
Step 3
3. Use a scale with more divisions.
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Answer
A scale with more divisions allows for finer measurement of gas volume, enhancing precision in results.
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