Question

how would you test the presence of starch in leaves

Answer 1

first we should boil the leaf in alcohol so that it looses its pigments then pour few drops of iodine if it turns to dark blue or black then it contains starch.


hope this helps you my frnd ✌️✌️✌️✌️

Answer 2

Hii dear here is your answer.

Presence of starch in leaves can be tested by iodine test. Iodine solution turns starch blue-black. The leaf to be tested is put in a test tube containing ethyl alcohol. It is heated gently in a water bath until alcohol begins to boil. The colourless leaf is removed from alcohol and washed thoroughly with water. Then leaf is placed in a petri-dish and few drops of iodine solution are poured over it. It the leaf becomes blue-black after pouring few drops of iodine solution over it, then it indicates the presence of starch in it.

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