MCQ
During photosynthesis, the oxygen in glucose comes from
  • A
    Water
  • Carbon dioxide
  • C
    Both from $CO_2$ and water
  • D
    Oxygen in air

Answer

Correct option: B.
Carbon dioxide
b
It’s obvious.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free