Melvin Calvin & Calvin Cycle — NEET Biology
📚 Practice ConceptMELVIN CALVIN born in Minnesota in April, 1911, received his Ph.D. in Chemistry from the University of Minnesota. He served as Professor of Chemistry at the University of California, Berkeley.
Match the following scientists with their primary contributions to understanding photosynthesis: Column I (Scientist) A. Joseph Priestley B. Jan Ingenhousz C. Julius von Sachs D. Cornelius van Niel E. Melvin Calvin Column II (Contribution) 1. Showed light is essential for oxygen release by green plant parts. 2. Discovered the pathway of carbon assimilation using radioisotope C14. 3. Demonstrated that plants restore the air. 4. Provided evidence for glucose production and its storage as starch. 5. Proposed that oxygen evolved in photosynthesis comes from water, not carbon dioxide.
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Correct answer: D — A-3, B-1, C-4, D-5, E-2
Let's match the scientists with their correct contributions based on NCERT: A. Joseph Priestley: Discovered the role of plants in restoring air used up by burning candles and breathing animals. So, A-3. B. Jan Ingenhousz: Showed that sunlight is essential for the plant process that purifies the air and that only the green parts release oxygen. So, B-1. C. Julius von Sachs: Provided evidence for the production of glucose when plants grow, which is usually stored as starch. So, C-4. D. Cornelius van Niel: Based on his studies of purple and green bacteria, he inferred that the O2 evolved by green plants comes from H2O, not from carbon dioxide. So, D-5. E. Melvin Calvin: Mapped the pathway of carbon assimilation in photosynthesis using C14, known as the Calvin cycle. So, E-2. Therefore, the correct match is A-3, B-1, C-4, D-5, E-2.
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