Question

9. Carry out the following osmosis experiment:
Take four peeled potato halves and scoos each one out to make
potato cups. One of these potato cups should be made from a
boiled potato. Put each potato cup in a trough 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 boiled potato cup D.
Keep these for two hours. Then observe the four potato cups
and answer the following:
(i) Explain why water gathers in the hollowed portion of
B and C.
(ii) Why is potato A necessary for this experiment?
(ii) Explain why water does not gather in the hollowed out
portions of A and D.​

Answer 1

Answer:

refer the picture

Explanation:

the above picture answers you questions

Answer 2

Answer:

(i) Because the water content in the potato is more than that of outside of potato so due to osmosis, the water gathers in cup B and C.

(ii) To understand that if the medium surrounding the potato don't have any difference in water content level then osmosis will not take place.

(iii) Because in A there was no change in surrounding medium(in water content level) and in D the water content level is lower than the outside medium due to which the water from outside medium moves in i.e. don't gather in the cup.

Hope this answer helps you ^_^ !