Experiment to determine rate of photosynthesis by Wilmott’s bubbler

Experiment to determine rate of photosynthesis by Wilmott’s bubbler

Wilmott’s bubbler consists of a wide mouth bottle fitted with single holed cork, a glass tube with lower end having wider opening to insert Hydrilla plant, the upper end fitted to a narrow bottle with water (Figure 13.25).

1.           Fill the bottle with water and insert Hydrilla twig into the wider part of the tube

2.           Hydrilla plant should be cut inside the water to avoid entry of air bubbles

3.           Fix the tube with jar which acts as water reservoir

4.           Keep the apparatus in sunlight

5.           Count the bubbles when they are in same size.