issb general knowledge MCQ #137

Which gas do green plants mainly take in during photosynthesis?

issb general knowledge MCQ #137

  1. Question 1

    Q1. Which gas do green plants mainly take in during photosynthesis?

    • A) Carbon dioxide
    • B) Oxygen
    • C) Nitrogen
    • D) Hydrogen

    Answer: Carbon dioxide

    Explanation: Plants absorb carbon dioxide from the air and use sunlight to convert it into glucose. Oxygen is released as a by-product of photosynthesis.