Advertisements
Advertisements
Question
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?
Advertisements
Solution
The bottle 'C' when covered with a black cloth will have no scope for photosynthesis. Hence, only the process of respiration can be observed.
APPEARS IN
RELATED QUESTIONS
Describe one experiment you would perform to demonstrate the following phenomena: The germinating seeds produce heat.
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:
What is the purpose of keeping potassium hydroxide solution in test tubes X and Y?
Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.
In how many flasks, the different plant parts have been kept under observation?
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.
In which tube/tubes the limewater will turn milky?
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 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.
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.
