Question

Given alongside is the diagram of an experimental set-up :
(a) What is the objective of this experiment ?
(b) Will it work satisfactorily? Give reason.
(c) What alteration(s) will you make in it for obtaining expected result?
(d) Would you take any step before starting the experiment? Describe this step and explain its necessity.

Answer 1

a) The main aim of this experiment is to describe the importance of carbon dioxide in the photosynthesis.
b) No, the experiment will not work satisfactorily because, as mentioned in the above statement carbon dioxide is very important in the photosynthesis. This experiment contains lime water it does not absorb $C{O}_2$.
c) To obtaining expected result replace the lime water from potassium hydroxide because it absorbs carbon dioxide.
d) Yes, we have to take a step before starting the experiment. A plant used for an experiment on photosynthesis should initially be placed in the dark for 24 to 48 hours to destarch the leaves. During this period, all the starch will be removed from the leaves and stored in the storage organs. The leaves will not show the presence of starch.