Question

2.Radhika covered a leaf of a potted plant with a black cover and kept it under sunlight for a few days. After a few days she tested it with iodine solution for the presence of starch in it. The color of the covered leaf did not turn blue-black. What does this indicate?



The black cover absorbed all the starch present in the leaf.

Iodine solution does not work with black covers.

Starch has evaporated from the leaf.

Starch is prepared only in the presence of sunlight.

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Answer 1

Answer:

it shoes that starch is not present in the leaf

Explanation:

iodine solution turns blue black when starch is present

Answer 2

The leaf changes into blue and black colour only in the presence of starch in it and stratch comes from sunlight. So If we cover it with black colour and then put it in sunlight Stratch does not prepared.

(Last option is correct)