Question

What is the iodine test? Draw structure of stomata and label

(a) Stomatal pore.

(b) Guard cell.​

Answer 1

Answer:

A solution of iodine (I2) and potassium iodide (KI) in water has a light orange-brown color. If it is added to a sample that contains starch, such as the bread pictured above, the color changes to a deep blue. ... Starch is a carbohydrate found in plants.The iodine test is used to check the availability of starch like carbohydrates in a sample. Starch changes to a deep "blue-black" colour upon addition of aqueous solutions of the triiodide anion, because of the production of an intermolecular charge transfer component (complex).

Answer 2

Answer:

test for the presence of starch in which the sample turns blue-black in color when a few drops of potassium iodide solution is placed on the sample. Supplement.