Question

How would you test the presence of starch in leaves?
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Answer 1

Answer:

Explanation:

Starch testing

Iodine solution is used to test leaves for the presence of starch. You need to: heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour)

Answer 2

Answer:

We need to drop a few drops of dilute iodine solution on them.

Explanation:

After a few minutes, the parts of the leaf that contain starch turn the iodine from brown to blue/black.