When asked to set up an experiment to show that ‘light is necessary for photosynthesis’, a student ran to the school garden and set up the experiment using a plant growing in the school garden. The experiment failed. His fellow student made the following suggestions to get success.
Student A: Safranin should be used instead of iodine.
Student B: The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch.
Student C: Transparent paper strip should be used instead of black paper strip.
Student D: The plant should be de-starched before starting the experiment. Which student made the right suggestion?
