Question

who discovered thee photosynthesis and when

Answer 1

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Who discovered thee photosynthesis and when?

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Jan Ingenhousz or Ingen-Housz FRS was a Dutch physiologist, biologist and chemist. He is best known for discovering photosynthesis by showing that light is essential to the process by which green plants absorb carbon dioxide and release oxygen. He discovered it in 1600s.

Born: 8 December 1730, Breda, Netherlands

Died: 7 September 1799, Bowood House and Gardens, United Kingdom

Spouse: Agatha Maria Jacquin (m. 1775–1799)

Known for: Photosynthesis

Nationality: Dutch, British

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Answer 2

Answer:hello

Explanation:

Photosynthesis was partially discovered in the 1600’s by Jan Baptista van Helmont, a Belgian chemist, physiologist and physician. Helmont performed a 5-year experiment involving a willow tree which he planted in a pot with soil and placed in a controlled environment. The willow tree was carefully and precisely watered over the 5-year period. At the end of his experiment Helmont concluded that the growth of the tree was the result of the nutrients it had received from the water and not the soil. Helmont’s conclusion was inaccurate but his experiment proved that water contributes to the growth of plants.

There’s also something in the air

Joseph Priestley was another scientist who contributed to the discovery of photosynthesis. He was born in 1733 and later became a chemist, minister, natural philosopher, educator and political theorist. His experiments included placing a lit candle inside a closed jar. The flame quickly went out and Priestley concluded that the air inside the jar had been “injured”. He conducted similar experiments with mice and concluded that the mice had also “injured” the air.

Priestley later discovered that plants could be used to restore air that was “injured” by the candle and the mice. In 1774, the results of Priestley’s experiments were published in “Experiments and Observations of Different Kinds of Air, Volume I.” Although Priestley did not know it at the time, his experiments proved that air contains oxygen.

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