What scientist showed plants produce oxygen?

Answer 1

Cornelis Bernardus van Niel, a Dutch-American microbiologist, was the first scientist to demonstrate that photosynthesis is a reaction in which hydrogen from an oxidizable compound reduces carbon dioxide to cellular materials. This discovery predicted that water is the hydrogen donor in green plant photosynthesis and is oxidized to O2.

This prediction was experimentally demonstrated by Robert Hill, a British plant biochemist who proved that oxygen is evolved during the light requiring steps of photosynthesis.

This was development of an understanding of the process of photosynthesis. The fact that plants release oxygen was known much earlier, without an understanding of why.

Joseph Priestley, the discoverer of oxygen, demonstrated that plants restore a vital quality to air, and we know know that quality to be oxygen. And in 1796, Jean Senebier, a Swiss pastor, botanist, and naturalist, demonstrated that green plants consume carbon dioxide and release oxygen under the influence of light

Answer 2

Joseph Priestley, a chemist and minister, discovered (probably some time around 1774) that, when he isolated a volume of air under an inverted jar, and burned a candle in it, the candle would burn out very quickly, much before it ran out of wax. He further discovered that a mouse could similarly "injure" air. He then showed that the air that had been "injured" by the candle and the mouse could be restored by a plant.

In 1778, Jan Ingenhousz, court physician to the Austrian Empress, repeated Priestley's experiments. He discovered that it was the influence of sunlight on the plant that could cause it to revive a mouse in a matter of hours.

Indirectly, Preistly and Ingenhousz had found that plants produce oxygen - although they were not specifically showing it was the production of the molecular oxygen that was occurring. Priestly in particular was holding on to an archaic concept of "phlogiston" and thought of what we now know as oxygen as "dephlogisticated air."

The first to correctly describe that plants were taking in carbon dioxide and releasing oxygen was Jean Senebier, a Swiss pastor, botanist, and naturalist. In 1796 he demonstrated that green plants consume carbon dioxide and release oxygen under the influence of light. the rest of the mechanism of photosynthesis was described by others late.

Answer 3

Joseph Priestley, an English chemist, is credited with discovering that plants produce oxygen. In 1771, he conducted an experiment where he noticed that a plant could rejuvenate air that had been "injured" by a burning candle, leading him to the conclusion that plants release a substance that animals need to breathe (now known as oxygen).

Answer 4

Jan Ingenhousz

Answer 5

Joseph Priestly

Answer 6

van helmont

Answer 7

none