Fill in the Blanks:
1. ------- is used to test the presence of starch

Correct answer:

1. Iodine is used to test the presence of starch.

Explanation:

Below are the steps to test the presence of starch:

1.Take a fresh leaf

2.Remove the chlorophyll from leaf by boiling in Alcohol

3.Put 2 drops of iodine solution on the boiled leaf

4.Colour of leaf will change to dark blue, showing the presence of Starch