BI-1249
Food tests
Biology · Secondary 4 · Easy · Food tests
A student tests for starch in a leaf. She first boils the leaf in water, then in alcohol, rinses it, and finally adds iodine solution. The leaf turns blue-black. What does this result show?
- Starch is present in the leaf.
- Glucose is present in the leaf.
- Protein is present in the leaf.
- No food substances are present in the leaf.
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