Question

what are the four materials required for the experiment to show that carbon dioxide is given out during respiration in plants.

Answer 1

the germinating speeds in the conical flask release CO2 during respiration,which is absorbed by the KOH solution kept in the small test tube. this creates a partial vacuum in the flask that forces the water up the delivery tube. Thus ,it proves that germinating seeds produce carbon dioxide during respiration.

Apparatus and materials required:
a conical flask ,a breaker, a cork with a hole, a glass tube bents at right angles at two places , a small test tube, a KOH solution , thread, coloured water

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Answer 2

1. Anhydrous Potassium Hydroxide

2. A glass beaker

3. A test tube to story KOH

4. A string to suspend the test tube from the beaker

5. A potted plant to conduct the expirement