Students are provided with a choice of two solutions. Each one is used to test for the presence of a different chemical.
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Solution
Tests for the presence of
Fehling's solution
Sugar
Lime water
Carbon dioxide
How could the students use one of these solutions to gather evidence for the
action of photosynthesis?
Pump the air from a closed container containing a plant through a sample of lime water.
O Grind up all parts of a plant, expose them to heat, collect the gas, and use lime water to test it
o Use Fehling's solution with the roots of several different species of plants, after boiling them for several minutes.
Use Fehling's solution on plant leaves exposed to light and on plant leaves covered in aluminum foil for a week.