Practical Biology

A collection of experiments that demonstrate biological concepts and processes.

Transpiration in plants

Accurate quantification of the movement of water into plants is possible with a potometer. Assessing the impact of changing humidity and air movement on plant uptake of water provides essential experience for understanding plant adaptations. Some species of plant develop with differing densities of stomata according to their environmental conditions. Measuring stomatal density provides a tool for investigating this variation.

Experiments