Question

GIVE REASON THAT WHEN POTATO CUBES PLACED IN WATER BECOME FIRM AND INCREASE IN SIZE

Answer 1

When potato cubes are placed in water they become firm and increase in size due to osmosis.

In this process a solvents molecules travels through a semi-permeable membrane, making their way to a more concentrated solution from a less concentrated one.

In this case the solvent is water which pass through potatoes membrane making it look bigger in size.

Answer 2

Potato cells have cell sap of higher concentration than the surrounding water. As a result, endosmosis occurs in which water molecules travel to the inside of the potato cells, making them firm. Due to the inflow of water, the cells become turgid, so the potato cube becomes firm and increase in size.