Photosynthesis - Shining the light on vegetables

Photosynthesis - Shining the light on vegetables

In the eighteenth century, Jan Ingenhousz, a Dutch physician and plant physiologistA scientist who studies the functions and processes of living organisms., proved that sunlight was essential to the life activities of green plants. In 1779, he published experiments showing that plants have two respiratory cycles. At night, plants absorb oxygen and exhale carbon dioxide, just as animals do, but during the day the cycle is reversed. Another eighteenth-century scientist, Englishman Joseph Priestley, made similar discoveries about plant respiration;The physical process that supplies oxygen to an animal's body. It also describes a series of chemical reactions that take place inside cells. In plants, at night or in the dark, the process is the same as in animals. In light, plants...

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