how do you prove that light is essential for photosynthesis?
Answers
on it observe the leaf observations the region of the leaf which was exposed to sunlightturns. blue in color the region of the leaf covered with black strip turns brownish in color inference this experiment shows that sunlight is necessary for photosynthesis.
Answer:
By performing the experiment below we can prove that light is essential 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-
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.
hope it helps...