Question

give an activity to show that starch is present in leaf​

Answer 1

Answer:

To test leaves for the presence of starch,the leaf is boiled in water and then the boiled leaf is placed in a boiling tube containing 90% ethanol (ethyl alcohol). ... The iodine reagent is then added, which causes the green areas on the leaf, where starch is supposedly present, to turn to a blue-black colour.

Answer 2

Answer:

1. Take a green leaf and boil it in water.

2. Boil the leaf in alcohol.

3. Wash the leaf in cold water.

4. Add a few drops of iodine.

5. The leaf turns blue-black.

This activity shows that starch is present in the leaf.

Hope this will help