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Question

A plant was kept in a dark room for a week. When its leaves are tested with iodine solution, it did not show the presence of starch. From this experiment we can conclude that _____ is required for photosynthesis.

A
Sunlight
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B
Iodine
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C
Starch
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D
Darkness
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Solution

The correct option is A Sunlight
Sunlight is essential for photosynthesis as the plant is kept in dark room for a week there is a lack of sunlight hence photosynthesis has not taken place.

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