The transportation of water takes place through a large spaced potato cavity filled with sugar solution placed in a dish containing small amount of eater?
(a) Xylem
(b) Phloem
(c) Through movement of one cell to another
(d) None of these

Correct Answer: (c) Through the movement of one cell to another

Explanation:

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:

Potato cup A is essential for this experiment as it acts as a control and provides the comparison with situations formed in potato cups B, C, and D. Cup A does not contain anything therefore it does not encourage the movement of water due to external substance.

(i) Water does not get accumulated in the hollow portion of A because cup A does not possess the concentration difference required for the movement of water, thus for osmosis.

(ii) Water gathers in the hollowed portion of B and C because, in both B and C cases, there is a concentration difference formed inside the trough and water in the cup (where potato scoops are placed). Therefore, the endosmosis process takes place and water enters into the hollow portion of the potato, and the potato wall acts as a semipermeable membrane.

(iii) Water does not get accumulated in the hollow portion of D because, in cup D, potato cells are boiled therefore cells become dead. These dead cells do not act as a semipermeable membrane to encourage the process of osmosis.

Tutorialspoint

Updated on: 12-Jan-2023

11 Views

Kickstart Your Career

Get certified by completing the course

Get Started