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प्रश्न
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'?
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उत्तर
Soda-lime is kept in bottle 'A' so as to check the (presence of) passage of CO2 present in bottle 'B'. This is because soda lime has a tendency to absorb CO2 present in the air.
The limewater present in bottle 'B' shows that no CO2 is entering bottle C with the air passing through bottle C.
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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.
Describe one experiment each of you would perform to demonstrate the following phenomena: The germinating seeds can respire even in a total absence of air.
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 the set-up F?
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:
Name the physiological process being studied.
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:
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?
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.
The given fig. refers to an apparatus which is used to demonstrate a physiological process:
(a) What is the purpose of keeping potassium hydroxide solution in test tubes X and Y?
(b) What is the purpose of keeping boiled peas soaked in disinfectant in test tube Y?
(c) Why has coloured water risen in tube 1?
(d) Name the biological process which causes the above rise.
(e) Define the biological process shown in the experiment.
