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Question
Priestley’s bell jar experiment led to the hypothesis that
Priestley’s bell jar experiment led to the hypothesis that
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Solution
The correct option is A plants were capable of restoring oxygen which had been completely used up by the mouse and the burning candle
In 1770, Priestley performed the famous bell jar experiment. He placed a burning candle in an air-tight bell jar. He observed that the candle got extinguished in a while. He took the experiment ahead by placing a mouse in the same air-tight jar. He noticed that the mouse suffocated and died in a while. Next, he kept a mint plant along with a mouse and a burning candle in the same bell jar. He demonstrated that the plant kept in the air-tight bell jar produced oxygen using the process of photosynthesis and replenished the air. This ensured the continued survival of the mouse and the burning candle in the jar. In the absence of the plant, the mouse died due to suffocation and the candle got extinguished.
Mohl’s half leaf experiment proved that CO2 is essential for photosynthesis.
Jan Ingenhousz proved that sunlight is essential for photosynthesis.
Option (c) is a wrong inference that could be made from Priestley’s bell jar experiment. Hence, options b, c and d can be eliminated.
In 1770, Priestley performed the famous bell jar experiment. He placed a burning candle in an air-tight bell jar. He observed that the candle got extinguished in a while. He took the experiment ahead by placing a mouse in the same air-tight jar. He noticed that the mouse suffocated and died in a while. Next, he kept a mint plant along with a mouse and a burning candle in the same bell jar. He demonstrated that the plant kept in the air-tight bell jar produced oxygen using the process of photosynthesis and replenished the air. This ensured the continued survival of the mouse and the burning candle in the jar. In the absence of the plant, the mouse died due to suffocation and the candle got extinguished.
Mohl’s half leaf experiment proved that CO2 is essential for photosynthesis.
Jan Ingenhousz proved that sunlight is essential for photosynthesis.
Option (c) is a wrong inference that could be made from Priestley’s bell jar experiment. Hence, options b, c and d can be eliminated.