Question

Write the changes that can be observed in the experimental leaf after starch test.

Answer 1

Answer:

After a few minutes, the parts of the leaf that contain starch turn the iodine from brown to blue/black. Variegated leaves have green parts (where the cells contain chlorophyll) and white parts (where there is no chlorophyll). ... This is evidence that chlorophyll is required for photosynthesis.

Explanation:

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Answer 2

Answer:

The hot water kills the leaf and the alcohol breaks down the chlorophyll, taking the green color out of the leaf. When you put iodine on the leaves, one of them will turn blue-black and the other will be a reddish-brown. Iodine is an indicator that turns blue-black in the presence of starch.

Explanation:

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