Exams › SSC CGL (Prelims) › GK

Which element is required for the process of photosynthesis?

1. Nitrogen
2. Oxygen
3. Carbon Dioxide
4. Hydrogen

Correct answer: Carbon Dioxide

Solution

Photosynthesis uses carbon dioxide and water to produce glucose in the presence of sunlight and chlorophyll. Oxygen is released as a by-product, not required as an input.

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