Question

Describe an experiment to prove that - plant leaf has starch​

Answer 1

Answer:

Starch testing

add the leaf to boiling ethanol in a water bath for a few minutes (the boiling ethanol dissolves the chlorophyll and removes the green colour from the leaf - it turns white so it is easy to see the change in colour) wash with water to rehydrate and soften the leaf and spread onto a white tile.

Answer 2

Answer:

The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then put two drops of iodine solution, it is colour change to blue indicates the presence of starch.20-Mar-2021

Explanation:

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