In an experiment demonstrating the evolution of oxygen in Hydrilla, so...
Amount of oxygen increases as the availability of carbon dioxide increases in given experimental condition.
View all questions of this test
In an experiment demonstrating the evolution of oxygen in Hydrilla, so...
Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate.
In an experiment demonstrating the evolution of oxygen in Hydrilla, so...
Explanation:
Introduction:
Hydrilla is an aquatic plant that undergoes photosynthesis to produce oxygen. In this experiment, sodium bicarbonate is added to the water in the experimental set-up. We need to determine the effect of sodium bicarbonate on the evolution of oxygen in Hydrilla.
Effect of Sodium Bicarbonate:
Sodium bicarbonate is a source of carbon dioxide (CO2) when dissolved in water. The addition of sodium bicarbonate increases the availability of carbon dioxide in the water. Carbon dioxide is an essential component for photosynthesis, which is the process by which plants produce oxygen.
Photosynthesis Process:
During photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose and oxygen. The equation for photosynthesis is as follows:
6CO2 + 6H2O + sunlight → C6H12O6 + 6O2
Effect on Oxygen Evolution:
Increasing the availability of carbon dioxide in the water by adding sodium bicarbonate will have a positive effect on the evolution of oxygen in Hydrilla. The reasons for this are as follows:
- Carbon dioxide is one of the reactants required for photosynthesis. By increasing the availability of carbon dioxide, the rate of photosynthesis increases, leading to increased oxygen production.
- Carbon dioxide is absorbed by the Hydrilla plant during photosynthesis. By adding sodium bicarbonate, the carbon dioxide concentration in the water increases, providing a continuous supply of carbon dioxide for photosynthesis.
- The increased availability of carbon dioxide allows the Hydrilla plant to carry out photosynthesis more efficiently, leading to increased oxygen production.
- Therefore, the amount of oxygen evolved increases as the availability of carbon dioxide increases.
Conclusion:
In the experiment demonstrating the evolution of oxygen in Hydrilla, the addition of sodium bicarbonate to water increases the availability of carbon dioxide. This, in turn, increases the rate of photosynthesis and leads to an increased evolution of oxygen. Therefore, option B, "Amount of oxygen evolved increases as the availability of carbon dioxide increases," is the correct answer.
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.