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Absorption of Carbohydrates

Why do we per...

Question

Why do we perform the iodine-test?

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Solution

Iodine test is performed to test the presence of starch in the leaves.

If photosynthesis has occurred, then the leaves would have presence of starch.

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Similar questions

Q. Why do fallen leaves not turn blue-black on being tested with iodine?

Q. Prachi performed an experiment as shown below.
figure

Study the two figures carefully. On adding iodine, only the mixture in test tube A changed to blue black whereas the mixture in test tube B remained the same colour. Can you say why?

Q. (a) why is the leaf boiled in alcohol for a short time?
(b) why do we dip the leaf in water before adding the iodine solution?

Q. The iodine test for starch is mainly performed to test the presence of carbohydrates.

Q. Variegated leaves do not give positive result for iodine test.

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Absorption of Carbohydrates

Standard XII Biology

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