1.

In the experiment to show that light is necessary for photosynthesis, some of the steps of the experiment deal with the following activities:I. Starch reacts with iodine and gives blue-black colourII. Chlorophyll is dissolved in ethanolIII. Hot water makes leaf tissue softThe correct sequence of these steps is :(1) I–II–III(2) II–III–I(3) III–II–I(4) I–III–II

Answer» In the experiment to show that light is necessary for photosynthesis, some of the steps of the experiment deal with the following activities:

I. Starch reacts with iodine and gives blue-black colour

II. Chlorophyll is dissolved in ethanol

III. Hot water makes leaf tissue soft

The correct sequence of these steps is :

(1) I–II–III

(2) II–III–I

(3) III–II–I

(4) I–III–II


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