Explanation:
1)what is the role of ethyl alcohol used in experiment to prove that chlorophyll is essential for photosynthesis?
2) State two sources from which plants obtain nitrogen for the synthesis of proteins and other compounds
10th cbse
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Immerse the leaf in boiling alcohol to decolourize it. Leaf slowly loses its green color, which goes into the alcohol. Dip this decolorized leaf in iodine solution. ... Green parts of the leaf possess chlorophyll; hence they carry out photosynthesis and produce starch, which turns blue-black with iodine.
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