Question

please answer this. it's urgent​

Answer 1

Answer:

oxygen is formed on upper side of the test tude

Answer 2

★ Required Answer ★

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Test tube and Funnel Experiment

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Aim :

To prove that oxygen is evolved during photosynthesis.

Materials required :

Test tube, Funnel, beaker, pond water, and Hydrilla plant.

Procedure:

1. Take a few twigs of hydrilla plant in a beaker containing pond water.
2. Place an inverted funnel over the plant.
3. Invert a test tube filled with water over the stem of the funnel.
4. Keep the apparatus in the sunlight for a few hours.

Observation :

After one hour, it is noted that water gets displaced down from the test tube.

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Inferences:

During photosynthesis, oxygen is evolves as a by-product. Gas bubbles liberated from the Hydrilla plant reach the top of the test tube and it displaces the water downwards. Take the test tube and keep a burning stick near the mouth of the test tube. The increased flame will appear. Hence, it is proved that oxygen is evolved during photosynthesis.

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