Multiple choice

Which of the following processes helps in the formation of CO2?

  1. Photosynthesis

  2. Respiration

  3. Osmosis

  4. Assimilation

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

Cellular respiration is the metabolic process in which cells break down glucose and oxygen to produce energy, releasing carbon dioxide as a byproduct. Photosynthesis, by contrast, consumes carbon dioxide.