An experiment to demonstrate hydrotropism involves using two beakers with different soil moisture conditions and observing the growth direction of plant roots:
- Take two beakers (labeled A and B).
- In beaker A, fill with moist soil and sow seeds.
- In beaker B, fill half with moist soil and half with dry soil; place a small water source adjacent to the moist soil side and sow seeds.
- Allow the plants to grow for several days.
Observations:
- In beaker A, roots grow straight as moist soil is equal on all sides.
- In beaker B, roots grow and bend towards the moist soil and water source.
This shows roots exhibit positive hydrotropism by growing towards water, confirming hydrotropism as the growth response of plant roots to water stimuli.