Why the potted plant was kept in a dark place for three days
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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.
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Leaves are destarched by “depriving them of light” for a prolonged time period, usually of 24 - 48 hours.
Explanation:
- Potted plants are very convenient to be work with because they can easily be well placed in a “dark cupboard”, or “under a bell jar” draped with a black cloth.
- A leaf picked from a potted plant and when it is preserved in a dark room for some days, it will not move into blue black when tested for starch.
- As it is preserve in a dark room and there is no light of sun, and the plant was unable to make the food by photosynthesis and starch is the result of photosynthesis.
To know more:
Will a leaf taken from a potted plant kept in dark room for a few days turn blue black when tested for starch? give reasons for your answer.
https://brainly.in/question/1377012
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