Question

The following diagram demonstrates a physiological process taking place in green plants. The whole set-up was placed in bright sunlight for several hours. Study the diagram and answer the questions that follows.​

​(v) What would happen to the rate of bubbling of the gas if a pinch of sodium bicarbonate is added to the water in the beaker? Explain your answer.​

Answer 1

• The process occurring in the set-up is photosynthesis. ​

• Rate of carbon dioxide is an external factor that affects the rate of photosynthesis. ​

• Rate of photosynthesis increases with the concentration of carbon dioxide up to a certain limit. ​

• Thus, addition of a pinch of $NaHC{O}_3$ will increase the rate of photosynthesis because of increase in $C{O}_2$ available in water.​