Keep a Hydrillo plant In a. funnel and Invert It In a bnker full of pond , water. Take a test tube fllled with pond wMor and keep It on the funnel. Set up the apparatus as $hown along3ldc. Keep It In sunllghL l•l After some time, bubbles st.trt coming up. Which g.u It c.in bel (b) What will happen tr : (1) we take bolled water Instead of pond water/ (ii) sodium bicarbonate Is added to the water/ (iii) Instead of Hydrilla, grass Is t.tken in this experiment/
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Asked on December 26, 2019 by
Devaprabha Bargali
A beaker is filled with water and twigs of Hydrilla are inserted in the funnel so that the cut ends are in the tube of the funnel and the funnel is put in the water. 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?
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If boiled water is used in the test tube, there will be no air bubbles. This is hydrilla cannot survive the high temperature of boiled water.