STANDARD Botany Historical Experiments MCQ Question
"Impure air is purified in the presence of light and green plants" was first said by
De Saussure
Priestley
Van Helmont
Ingenhousz
Correct Answer
Detailed Explanation
Joseph Priestley carried out an experiment that showed that plants produce oxygen. He put a mint plant in a closed container with a burning candle and proved that impure air is purified in the presence of light and green plants.
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