Question

Which of the following cycles involve photosynthesis and cellular respiration?

• A. Sulphur cycle
• B. Carbon cycle
• C. Nitrogen cycle
• D. Phosphorus cycle

Answer 1

The correct option is B Carbon cycle

Carbon cycle involves both photosynthesis and respiration processes.
Carbon from atmospheric carbon dioxide is fixed by the process of photosynthesis to produce glucose. This glucose is utilised by plants and other animals to generate energy by the process of respiration. Carbon dioxide is released as the by product of respiration.