Key learning points

1. Some of the glucose made by photosynthesis is converted into starch and stored in starch grains in leaf cells.
2. Iodine solution can be used to test plant leaf tissue for the presence of starch.
3. A scientific prediction is a testable statement about a possible outcome, which can be tested in an experiment.
4. Predicting the iodine test result for destarched leaves kept in various conditions, and explaining the predictions.
5. Observing the iodine test result for destarched leaves kept in various conditions, and explaining the observations.

Keywords

• Photosynthesis - the process used by producers to make their own food via a series of chemical reactions

• Glucose - a type of sugar, which is a simple carbohydrate

• Starch - a complex carbohydrate, made of many glucose molecules joined together to form a polymer

• Iodine solution - a reagent that can be used to test for the presence of starch

• Prediction - a scientific prediction is a testable statement about a possible outcome, which could be tested in an experiment

Common misconception