Siti placed a plant in a dark cupboard for two days before using it in an experiment to test for the presence of starch in leaves. What was the purpose of this?
Show Worked Solution
Worked Solution
Step 1: Starch is the stored form of food made during photosynthesis.
Step [2-9]: In the dark, the plant cannot photosynthesize but continues to use up its stored starch.
Step [2-9]: This ensures that any starch found later is only from the experiment itself.
Correct answer: To ensure the leaves are free of starch before the experiment.
Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.
Start Free Trial — 7 Days Free