Question

1 . Prove that for photosynthesis sunlight is required​

Answer 1

Answer:

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Explanation:

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.

Answer 2

Answer:

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Photosynthesis is an important physiological activity of green plants. For photosynthesis to occur in green plant the factors required are Sunlight, Chlorophyll and Carbon dioxide. To prove the necessity of these factors there are certain specific experiments have to be in the laboratory.