Question

A green leaf is bleached before performing a strach test. Why

Answer 1

Answer:

A green leaf is bleached before carrying out a starch test so that the cell wall of the leaf can be broken, and its chlorophyll is removed. Chlorophyll is removed so that, leaf can absorb iodine solution and turns into blue-black color, to show the presence of starch in it.

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Answer 2

Answer:

A green leaf is bleached before carrying out a scratch test so that the cell wall of the leaf can be broken, and it's chlorophyll is removed.

So that leaf can absorb iodine solution and turns into blue, black color,to show the presence of scratch in it.

Explanation:

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