Procedure:

• Take a big tray which should be able to accommodate a porous pot.
• Fill the tray with sand. Put some seeds in it.
• Make a pit in the sand to insert the pot in it.
• Fill the porous pot with water.
• Do not disturb the set up for about a week.
• After a week, locate the seeds and observe.

Observation: When seeds are taken out, you will see that the roots show bending towards the direction from which water is diffusing. This shows the hydrotropic movement in roots.