Show how sunlight is necessary for …

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Posted by Confusion ??? Master ??? 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
To prove the necessity of sunlight in photosynthesis following steps need to do
- Take a plant with destarched leaf.
- Leaf is partially covered with black paper on which a design is cut.
- Expose this plant to sunlight for few hours and perform a starch test with iodine solution.
Observation-
- Covered leaf part shows brown colouration.
- Exposed leaf shows blue-black colour.
Result- Starch is present in the exposed leaf.
Conclusion- Leaf exposed to sunlight give iodine test, proving that sunlight is necessary for photosynthesis.
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Aman Jyoti 5 years, 4 months ago
0Thank You