Design an experiment to demonstrate hydro tropism.

What do you understand by polarisation of light ?Describe an experiment to demonstrate transverse nature of light.

Arrange an experiment to demonstrate the formation of longitudinal wave.

Describe an experiment that would demonstrate that growth timulating hrmone is produced in the tip of coleptile.

What are decomposition reactions? Give one experiment to demonstrate a decomposition reactions?

Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?