Question

How would you test the presence of starch in a leaf. Write the answer in a paragraph.

Answer 1

we would test the presence of starch in a leaf by drying it for 2 to 3 days and then by putting it into an iodide solution if after some days we observe that it turns purple then it is it contains starch and otherwise not

Answer 2

$\huge\mathfrak{Answer :}$



Take a potted plant and put in a dark room.

After sometime pluck a leave from the plant.

Then boil it in water for 5 min to soft it and after doing that place the leave in a test tube containing alcohol.

Place the test tube in a beaker containg water.

Then, genlty heat the beaker till the alcohol dissolves in the chrolophyll and the leaves loses its green colour.

Wash the leaf and Water.

After doing that place the leaf on a plate and add a few drops of iodine solution.

The parts that turn blue black show the presence of starch in a leaf.

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