Take two potted plants of the same kind keep one in the dark for 72 hours and the other in the sunlight perform iodine test with the leaves of both the plants as you did in record your results now leave the pot which was earlier kept in the dark in the sunlight for 3-4 days and perform the iodine test again on its leaves record your observation in your notebook
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Iodine test is used to test for the presence of starch.
When a plant is kept in the dark for 72 hours it is denied light which is a condition necessary for photosynthesis.
Photosynthesis leas to formation of starch.
When an iodine test is carried out for the leaf of the plant kept in the dark, the columns of iodine remain unchanged.
This is because of the absence of starch.
However when an Udine test is performed on the leaf of the plant kept in the light, the colour of the I done solution turns blue black indicating the presence of starch in the leaf.
When a plant is kept in the dark for 72 hours it is denied light which is a condition necessary for photosynthesis.
Photosynthesis leas to formation of starch.
When an iodine test is carried out for the leaf of the plant kept in the dark, the columns of iodine remain unchanged.
This is because of the absence of starch.
However when an Udine test is performed on the leaf of the plant kept in the light, the colour of the I done solution turns blue black indicating the presence of starch in the leaf.
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Answer:
Explanation:
Iodine test is used to test for the presence of starch.
When a plant is kept in the dark for 72 hours it is denied light which is a condition necessary for photosynthesis.
Photosynthesis leas to formation of starch.
When an iodine test is carried out for the leaf of the plant kept in the dark, the columns of iodine remain unchanged.
This is because of the absence of starch.
However when an Udine test is performed on the leaf of the plant kept in the light, the colour of the I done solution turns blue black indicating the presence of starch in the leaf.
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