McqMate
| Q. |
To carry out photosynthesis plants require – |
| A. | Oxygen |
| B. | Carbon-dioxide |
| C. | Nitrogen |
| D. | Hydrogen |
| Answer» B. Carbon-dioxide | |
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Explanation: In photosynthesis, carbon dioxide is converted into sugars in a process calledcarbon fixation. Carbon fixation is a redox reaction, so photosynthesis needs to supply both a source of energy to drive this process, and the electrons needed to convert carbon dioxide into a carbohydrate, which is a reduction reaction. |
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