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Question
Who discovered that CO2 is taken in and O2 is released by green plants?
Who discovered that CO2 is taken in and O2 is released by green plants?
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Solution
The correct option is D Priestly
Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants. Priestley, discovered oxygen in 1774. Priestley observed that a candle burning in a closed space a bell jar, soon gets extinguished. Similarly, a mouse would soon suffocate in a closed space. He concluded that a burning candle or an animal that breathe the air, both somehow, damage the air. But when he placed a mint plant in the same bell jar, he found that the mouse stayed alive and the candle continued to burn. Priestley hypothesised as follows: plants restore to the air whatever breathing animals and burning candles remove.
Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants. Priestley, discovered oxygen in 1774. Priestley observed that a candle burning in a closed space a bell jar, soon gets extinguished. Similarly, a mouse would soon suffocate in a closed space. He concluded that a burning candle or an animal that breathe the air, both somehow, damage the air. But when he placed a mint plant in the same bell jar, he found that the mouse stayed alive and the candle continued to burn. Priestley hypothesised as follows: plants restore to the air whatever breathing animals and burning candles remove.
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