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Explain the Historical Perspective of Photosynthesis. |
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Answer» Joseph Priestley (1770) : Showed that plants have the ability to take up CO2 from atmosphere and release O2. Jan Ingenhousz (1779) : Release of O2 by plants was possible only in sunlight and only by the green parts of plants. Theodore de Saussure (1804) : Water is an essential requirement for photosynthesis to occur. Julius Von Sachs (1854) : Green parts in plant produce glucose which is stored as starch. T. W. Engelmann (1888) : The effect of different wavelength of light on photosynthesis and plotted the first action spectrum of photosynthesis. C. B. Van Niel (1931) : Photosynthesis is essentially a light dependent reaction in which hydrogen from an oxidisable compound reduces CO2 to form sugar. He gave a simplified chemical equation of photosynthesis. Hill (1937) : Evolution of oxygen occurs in light reaction. Calvin (1954-55) : Traced the pathway of carbon fixation. Hatch and Slack (1965) : Discovered C4 pathway of CO2 fixation. |
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