Question

briefly show by an experiment how to investigate the necessity of light for photosynthesis​

Answer 1

First cut few papers.

second paste them on a plant/leaf

third leave them alone for few days

observation

u will dark leaf will dry beneath the paper

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Answer 2

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.

Experiment to show that sunlight is necessary for photosynthesis - definition. 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.

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