Multiple choice

What are the raw materials needed for photosynthesis?

  1. oxygen and water

  2. sugar and oxygen

  3. carbon dioxide and water

  4. sugar and carbon dioxide

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis is the process by which plants make their own food. The raw materials required for this chemical reaction are carbon dioxide, which is absorbed from the air, and water, which is absorbed from the soil, in the presence of sunlight.