Question

experiment on photosynthesis to show the release of oxygen during photosynthesis using hydrilla or elodea​

Answer 1

• Then a test tube full of water is inverted over the inverted funnel. Air bubbles from the plant collect at the tip of the tube. This experiment demonstrates that oxygen is evolved during photosynthesis. But, if boiled water is used instead of pond water in which Hydrilla grows, then?

Answer 2

Experiment to prove that oxygen is released during photosynthesis

Explanation:

To prove that photosynthesis results in the production of oxygen by the plant, we can performing the following steps:

• Place water plant (hydrilla or elodea) in a beaker containing pond water.
• Cover the plant with a short-stemmed funnel.
• Invert the test tube full of water and cover the stem of the funnel.
• Please refer to the attached picture to know how to arrange the equipment.
• While placing the test tube, make sure that the level of water in beaker is above the level of funnel's stem.
• Keep the above set up in a place where it can get sunlight.
• Observe the set up  after a few hours.
• You will find that gas bubbles will form and collect in the test tube.
• The gas so collected is oxygen and it can be confirmed using a simple test for oxygen.

Test for oxygen: A glowing splinter bursts into flame in the presence of oxygen.

Thus it is proved that oxygen is produced by the green plants during photosynthesis.