will a leaf taken from a potted plant kept in a dark room for a few da

1.	will a leaf taken from a potted plant kept in a dark room for a few days turn blue black when tested for starch
Answer» No, a leaf plucked from a potted plant kept in a dark room for a few days, will not turn blue-black when tested for starch. This is because, since it was kept in a dark room where there was no sunlight, the plant was unable to prepare the food by photosynthesis. And starch is the product of photosynthesis. So if there was a place of photosynthesis, there was no formation of starch. Hence, the leaf would not turn blue-black as there is the absence of starch.

will a leaf taken from a potted plant kept in a dark room for a few days turn blue black when tested for starch

Answer»

No, a leaf plucked from a potted plant kept in a dark room for a few days, will not turn blue-black when tested for starch.
This is because, since it was kept in a dark room where there was no sunlight, the plant was unable to prepare the food by photosynthesis.
And starch is the product of photosynthesis.
So if there was a place of photosynthesis, there was no formation of starch.

Hence, the leaf would not turn blue-black as there is the absence of starch.

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will a leaf taken from a potted plant kept in a dark room for a few days turn blue black when tested for starch

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