Q7: Why is there a difference in result of the iodine test in the covered with black p
uncovered (exposed to sunlight) regions of the experimental leaf in the experiment
light is required for photosynthesis?
Answers
Answer:
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.
Explanation:
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Answer:
it proves that Chlorophyll is necessary for photosynthesis...
it turns blue-black as starch is present in the inner part of the leaf
from this experiment we can conclude that the photosynthesis to make starch takes place in the presence of chlorophyll...
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