Safranine should be used instead of iodine.

Monjur Alahi

While doing the experiment to show light is necessary for photosynthesis, the student was given following suggestions by his fellow students. Which are the correct suggestions given by his fellow students? 

I. Safranine should be used instead of iodine. 

II. The leaf should be boiled in alcohol with water bath to remove chlorophyll. 

III. Transparent paper strip should be used instead of black paper strip. 

IV. The plant should be destarched before starting the experiment.


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Salim Ahmed Kawsar

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Suggestions II and IV are correct. 

Suggestion I is wrong because safranine is used to stain plant cell not to test the presence of starch. 

Suggestion III is wrong because transparent paper strip is permeable to sunlight.

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