Question

We can increase the rate of photosynthesis during experiments by

• A. Adding $H_{2}O$
• B. Adding $NaHC{O}_3$
• C. Taking a bigger funnel
• D. Taking a big beaker

Answer 1

Answer: (B)

Adding $NaHC{O}_3$

Baking soda solution supplies carbon dioxide necessary for photosynthesis. When the experimental tube is subjected to light, the leaf disks will produce oxygen gas and float to the surface of the chamber. Thus, addition of NaHCO${}_3$ increases the rate of photosynthesis during experiments and other factors such as adding H${}_{2}O$, taking bigger funnel and taking a big beaker does not increase the rate of photosynthesis. So, option B is correct.