How would we demonstrate that green plants releases oxygen when exposed to sun light
Answers
Answer:When sufficient gas gets collected, a glowing splinter will be introduced in the test tube, which will burst into flames. Inference: The splinter glows due the presence of oxygen in the test tube which proves that the gas collected in the test is released by hydrilla during photosynthesis.
Aim : To prove that plants release oxygen when exposed to sunlight
Apparatus : Testtube, Funnel, Beaker with water, Hydrilla twigs, Glowing incense stick
Procedure :
1) Take a beaker with water and put hydrilla twigs into it
2) Invert a funnel over these twigs
3) Invert a test tube full of water over the stem of the funnel
4) Ensure that the level of water in the beaker is above the level of the stem of the inverted funnel
5)Leave the apparatus in the sunlight for few hours
Test:
Remove the test tube carefully by keeping your thumb over the mouth so that the gas doesnt escape.
Insert a glowing incense stick into test tube. It bursts in to flames. This gas is oxygen
Result:
This experiment proves that green plants release oxygen when exposed to sunlight....
hope it helps .......