Question

If we keep on increasing CO₂ concentration in the air, will the rate of photõsynthesis also keep on increasing in direct proportion?

Yes/No. Explain.

Answer 1

Yes, the rate of photosynthesis increases with an increase in carbon dioxide concentration, but it stabilises at a specific point (up to 0.02% of CO₂) if light intensity remains constant. If light intensity increases, the rate of photosynthesis increases further and stabilises at 0.05% CO₂.