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Home› UPSC CSE› Prelims GS Paper I› 2014 questions› Question 84

UPSC CSE Prelims

Subject: Biology Chapter: Plant Biology & Development

2014 PYQ

Question 84

Which one of the following is the process involved in photosynthesis?

Choose one answer APotential energy is released to form free energy BFree energy is converted into potential energy and stored CFood is oxidized to release carbon dioxide and water DOxygen is taken, and carbon dioxide and water vapour are given out

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Correct answer: B

Correct Option: B Explanation: Photosynthesis captures light energy and stores it as chemical potential energy in sugars produced from carbon dioxide and water. Option-wise Analysis: A: Incorrect - It does not principally release stored potential energy as free energy. B: Correct - Correct: incoming energy becomes stored chemical energy. C: Incorrect - Oxidising food and releasing CO₂ is cellular respiration, not photosynthesis. D: Incorrect - Consuming oxygen and releasing CO₂ describes respiration, not photosynthesis.

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