and scoos each one out to
otato cups should be made
n Potato cup in a trough
IS osmosis?
Carry out the following osmosis experiment:
Take four peeled potato halves and scoos each
make potato cups. One of these potato Cups Sn
from a boiled potato. Put each potato CUP
containing water. Now.
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(C) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the bou
poon sugar in the boiled potato cup D..
Keep these for two hours. Then observe the four potato
and answer the following:
(1) Explain why water gathers in the hollowed pom
B and C.
(ii) Why is potato A necessary for this experiment?
(iii) Explain why water does not gather in the hollowed
portions of A and D.
he hollowed portion of
Answers
Answer:
(i) Since sugar and salt was present in B and C respectively, water from the trough gathered in the hollowed portions of potato in B and C by the process of osmosis
(ii) Potato A is necessary for carrying out this experiment because it acts as a control experiment. Control helps us to check what changes occurred during the course of the experiment and helps us to compare the results.
(iii) Water does not gather in the hollowed portion of potato A as it was empty. Water also does not gather in the cup D because the potato used was boiled which makes it inactive as after boiling its protein structure were denatured, resulting in the disruption of the cell membrane.
Answer:
points
(i) Since sugar and salt was present
in B andC respectively, water from
the trough gathered in the hollowed
portions of potato in B and C by the
process of osmosis
(ii) Potato A is necessary for carrying
out this experiment because it acts as
a control experiment. Control helps us
to check what changes occurred during
the course of the experiment and helps
us to compare the results.
(ii) Water does not gather in the
hollowed portion of potato A as it was
empty. Water also does not gather in
the cup D because the potato used
was boiled which makes it inactive as
after boiling its protein structure were
denatured, resulting in the disruption of
the cell membrane.