2. Before carrying out the test for presence of starch in a leaf, the leaf is put in alcohol
contained in a beaker and boiled over a water bath for
(a) to extract starch
(b) dissolve chlorophyll
(c) make membranes of leaf cell more permeable (d) allow water to move into the leaf
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the answer is option b
it is so because when chlorophyll is dissolved the leaf becomes colourless and when you apply indicator on the leaf you will easily detect the colour change due to presence of starch
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