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Improve an Experimental Design
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AP Biology
APB.024 Improve an Experimental Design
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A chlorophyll fluorescence study compares photosynthetic efficiency among plant treatments. Some leaves are dark-adapted for 5 minutes, while others are dark-adapted for 40 minutes before measurement. Which revision most improves precision?
A
Dark-adapt only the treatment expected to have lower efficiency.
B
Use different fluorometer settings for each plant group.
C
Use the same dark-adaptation duration for all leaves before fluorescence measurements.
D
Measure only leaves that show the highest fluorescence.
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