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The experiment set – up below was designed to investigate an aspect of germination.

      

The experiment set – up below was designed to investigate an aspect of germination.

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a) Why was potassium hydroxide pellets used in this experiment?
b) What was the role of moist cotton wool in this experiment?
c) i) By means of an arrow, indicate on the diagram the direction in which red dye would move
during the experiment.
ii) Give reason for your answer in c(i) above.

d) Other than the factor investigated above, state any other one factor necessary for germination
process.

  

Answers


Martin
(a) To absorb carbon (IV) oxide;

(b) to provide moisture to germinating seeds;

(c) (i) (Left – right direction );

(ii) Oxygen in the tube is taken up by the seeds for germination; the Carbon (IV Oxide
Produced during respiration and the one in the tube reacts with potassium hydroxide
pellets; lowering the pressure inside the set-up; the higher pressure from outside the tube
forces the dye in the direction shown

d)water
marto answered the question on October 7, 2019 at 09:26


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