how would you test the presence of starch in leaves
Answer (1)
21st Feb, 2021
Hello,
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. Presence of starch in leaves can be tested by process called iodine test. Iodine turns starch solution into blue-black colour. Pour few drops of dilute iodine solution on the boiled leaf. The leaf becomes blue-black which proves the presence of starch in it.
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