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Show how sunlight is necessary for plants ?? |
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Answer» Sun is necessary for plant because sun gives light from which plants make their food . To prove the necessity of sunlight in photosynthesis following steps need to do\tTake a plant with destarched leaf.\tLeaf is partially covered with black paper on which a design is cut.\tExpose this plant to sunlight for few hours and perform a starch test with iodine solution.Observation-\tCovered leaf part shows brown colouration.\tExposed leaf shows blue-black colour.Result-\xa0Starch is present in the exposed leaf.Conclusion-\xa0Leaf exposed to sunlight give iodine test, proving that sunlight is necessary for photosynthesis. |
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