Question

A Hydrilla plant is kept in a beaker containing water. It is covered with an inverted glass funnel and a test tube full of water is placed over it .Care is taken about the water level so that no bubble enters the test tube. The whole experiment is put in sunlight. It is found that the level of water is coming down and a gas accumulates at the upper end of the test tube. The whole experiment is conducted in red, blue and green light alternatively. After sometime some amount of Sodium bicarbonate is added to the beaker.

What will happen to the rate of photosynthesis if sodium bicarbonate is added in the beaker?

• A. Rate will increase
• B. Rate will decrease
• C. It will remain same
• D. None is correct

Answer 1

The correct option is A

Rate will increase

The correct option is A.
Explanation of the correct option:

1. Photosynthesis is the process of conversion of light energy into chemical energy.
2. It depends on a variety of factors like light, CO₂, water etc.
3. The addition of sodium bicarbonate in water leads to an increased amount of carbon dioxide.
4. More CO₂ will result in an increased rate of photosynthesis.

Final answer: The rate of photosynthesis will increase if sodium bicarbonate is added to the beaker.