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प्रश्न
Given alongside is an experimental set up to demonstrate a phenomenon in a plant:
(a) What is the aim of this experiment?
(b) Why was the bell jar covered with a black cloth?
(c) What is the function of caustic soda in this experiment?
(d) Give an overall chemical equation of the process mentioned in (a) above.
(e) Mention one precaution that should be taken to ensure more accurate results. What change, if any, would you observe in the lime water in Flask A and B? In each case give a reason for your answer.
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उत्तर
(a) Aim - To show that carbon dioxide is released during respiration.
(b) To prevent photosynthesis
(c) To absorb carbon dioxide from incoming air.
(d) C6H12O6 + 6O2 → 6CO2 + H2O + 673 kcal energy {38 ATP}
(e) The respiratory chamber should be covered with black cloth to prevent photosynthesis.
The lime water in Flask A turns milky as the plant respires and gives out carbon dioxide which turns the lime water milky. The lime water in Flask B remains clear as the incoming air is free from carbon dioxide.
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संबंधित प्रश्न
Describe one experiment you would perform to demonstrate the following phenomena: The germinating seeds to give out carbon dioxide.
The following diagram refers to an apparatus which is used to demonstrate a physiological process:
Why has the coloured water risen in tubing 1?
Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.
What is the purpose of keeping a test-tube containing limewater in each flask?
Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.
What conclusion can you draw from this experiment?
In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follows:
What is the function of soda lime in the bottle 'A' and why is limewater placed in bottle 'B'?
In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:
What change would you expect to observe in bottle 'D'?
In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:
In order to obtain accurate results, the bottle 'C' should be covered with black cloth. Why?
In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:
If bottle 'C' was fitted with a 3-holed rubber stopper and a thermometer was introduced in such a way that its bulb reaches close to the germinating seeds, what would you observe? Why?
Name the following:
The chemicals generally used to absorb carbon dioxide in respiratory experiments.
Name the following:
The solution that turns milky when carbon dioxide is passed through that solution.
