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Photosynthesis

In an experim...

Question

In an experiment to test the presence of starch in a leaf, the leaf is boiled in alcohol for a few minutes using a water bath. This is an essential step in the experiment because alcohol:
(1) softens the leaf
(2) disinfects the leaf
(3) allows iodine to enter the leaf
(4) dissolves chlorophyll from leaf

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Solution

Boiling the leaf in alcohol before testing the presence of starch in a leaf is an essential step. It removes the chlorophyll from leaves.

Hence, the correct answer is option 4.

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Q. In an experiment to test the presence of starch in a leaf, the leaf is boiled in alcohol for a few minutes using a water bath. This is an essential step in the experiment because:

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