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A leaf was plucked from a plant on a sunny day and kept for 2 minutes in boiling water. It was subsequently immersed in boiling alcohol and treated with iodine solution. What will be the final colour of the leaf after the test?

 The final color of the leaf after the described test would likely be a bluish-black color.

The process described is a common laboratory experiment known as the iodine test for starch. When a leaf is plucked from a plant, it contains starch. The boiling water breaks down the cell membranes and denatures the enzymes, effectively stopping any metabolic processes. Boiling alcohol acts as a solvent to remove chlorophyll from the leaf. Finally, when the leaf is treated with iodine solution, it reacts with the remaining starch, resulting in the formation of a bluish-black color. This color change indicates the presence of starch in the leaf.

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