Design an experiment to demonstrate hydrotropism.

Explanation

Hydrotropism is the movement of a plant towards or away from water. Example: Plant roots bends towards the source of water.
Experiment to demonstrate hydrotropism :
Requirements : Bean seeds, a deep tray, sand water and a porous flower pot.
Procedure :
(a) Fill the tray (big enough to accommodate porous pot) with sand and insert some seeds in it.
(b) Make a pit in the sand and place the porous pot in it.
(c) Fill water in the porous pot.
(d) Leave the arrangement for about a week .
Observation : After about a week when seeds are taken out, it is observed that roots grow in the direction of the porous pot. This shows hydrotropism in roots.