The following two chemical reactions are supposed to indicate a certain process occurring in the green plants under two different conditions:

(a) C6H12O6 + 6O2 -----> 6CO2 + ____ + 38 ATP

(b) C6H12O6 -----> _____ + 2CO2 + 2 ATP

(i) Fill in the blank in each reaction.

(ii) Name the process represented by the two reactions.

(iii) What are the conditions under which the two reactions (a) and (b) are occurring respectively?

The following diagram 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) Why has the coloured water risen in tubing 1?

(c) What is the purpose of keeping boiled peas soaked in a disinfectant in test tube Y?

(d) Name the biological process which causes the above rise.

(e) Define the biological process shown in the 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 questions that follow:

(a) Name the physiological process being studied.

(b) What is the function of soda lime in the bottle 'A' and why is limewater placed in bottle 'B'?

(c) What change would you expect to observe in bottle 'D'?

(d) Represent the physiological process named in (a) above in the form of a chemical equation.

(e) In order to obtain accurate results, the bottle 'C' should be covered with a black cloth. Why?

(f) 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?