Question

What is the observation for the following activity?

Materials required:
a)Raisins (4 nos.)  
b)Beakers (4 nos.)
c)Two slices of Potatoes (cut length-wise)
d)Water e)Salt solution

Procedure:
1)Take two beakers. Name them A and B. In A put normal water and in B pour salt solution. In both the beakers put 2 Dry Raisins each. Leave it for 30 mins.                     

2)Take two other beakers. Name them C and D. In both the beakers put the slice of potato. Leave it for 30 mins.  ​

Answer 1

Answer:

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. 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. 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.

Hope this helps you! If you like it, please mark it as the brainliest answer and thank me!