Part B-Extraction of photosynthetic pigments into 1. To extract the pigments, pl

Question

Part B-Extraction of photosynthetic pigments into 1. To extract the pigments, place a 400 ml beaker containing 200 mls of 80% ethanol a 1 L beaker containing 200 mls of water. hot plate. 2. Place the nested beakers on the hot plate and turn on the to maintain a slow boiling. 3. Bring the nested beakers to a boil and adjust the temperature DO NOT PLACE THE BEAKER OF ALCOHOL DIRECTLY ON THE HOT PLATE! 4. Remove the filters and black paper from the leaves and carefully drop the leaves into the boiling alcohol solution.

Explanation / Answer

Information is insufficient for the 1st question so let me answer second question for you

Ans 2. The part of leaf, where the black paper was present could not photosynthesize because the paper absorbed all the sunlight falling over it, leaving no light for the leaf part below it. Plants cannot do photosynthesis in the absence of sunlight so no starch will be present below that black construction paper.

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