Question

Why is leaf boiled in alcohol before doing starch test

Answer 1

Because the presence of starch confirms that photosynthesis has taken place and alcohol destarch the leaf

Answer 2

Answer:

Explanation:

Before doing a starch test with a leaf it becomes relevant to boil the leaf in alcohol, in order to remove the chlorophyll from the green leaf.

On doing this, the leaf becomes decolorized, and it is then when it is treated with iodine and blue-black color so as to test the presence of starch in the leaf.