The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both test-tubes are kept in sunlight. Answer the question that follow:

(e) Give an example of a water plant that can be used in the above experiment.

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Solution

Hydrilla is a water plant that can be used for such an experiment.

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The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both Test-tubes are kept in sunlight. Answer the questions that follow :

(a) Name the physiological process that releases the bubbles of oxygen.

(b) Explain the physiological process as mentioned above in Q.2(a) (i).

(d) Why does test-tube 'B' have more bubbles of oxygen ?

(e) Give an example of a water plant that can be used in the above experiment.

(f) Write the overall chemical equation for the above process.

Question 4
Take three test-tubes. Fill each of them with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test tube would have the highest concentration of $C O_{2}$ ?

Q. Take three test-tubes. Fill each of them with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test-tube would have the highest concentration of

C O_{2}

Take three test tubes. Fill 3/4th of each with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B, and in C, keep snail and plant both. Which test tube would have the highest concentration of CO₂?

Q. The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both test-tubes are kept in sunlight. Answer the question that follow:

(c) What is the purpose of keeping snail in test-tube B?

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The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both test-tubes are kept in sunlight. Answer the question that follow: (e) Give an example of a water plant that can be used in the above experiment.

Hydrilla is a water plant that can be used for such an experiment.

The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both test-tubes are kept in sunlight. Answer the question that follow:

(e) Give an example of a water plant that can be used in the above experiment.