Question

Experiment to check light reaction of photosynthesis

Answer 1

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

Answer 2

Take a potted plant . Keep it in a dark room for 3 days .Then take it out . Pluck a leaf from the plant. Mark the green colour of the leaf. Now put the leaf to the beaker containing alcohol to kill the germs . Now put it to the iodine solution.Observe the change .

We come to the conclusion that Starch is present if the leaf turns to blue black

Starch is not present if the leaf turns to brown colour

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