Why do we immerse the plant in a sodium bicarbonate solution?

Immersing a plant in a sodium bicarbonate solution helps to increase the availability of carbon dioxide (CO2) for photosynthesis. Sodium bicarbonate dissociates in water to release bicarbonate ions, which can be used by the plant as a carbon source, enhancing the photosynthetic process. This method is often used in experiments to observe the rate of photosynthesis under controlled conditions. Additionally, it can help to create a more alkaline environment, which may benefit certain plant species.