To prove that Sunlight is necessary for photosynthesis | 10th Biology

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✔️ Subject: Biology
✔️ Chapter: Life Process - Nutrition
✔️ Topic Name: To prove that Sunlight is necessary for photosynthesis

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Experiment to show that sunlight is necessary for photosynthesis
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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