Describes the functions of roots and stems in the development of plants, and includes fun facts and an experiment to do at home or in the classroom.

Introduces readers to the parts and functions of plant stems and trunks, and describes some of the adaptations that help them survive. Includes color photographs and diagrams, examples of plants from around the world, two simple experiments, a glossary, and further resources.

In this 1880 book, written with his son Francis, Darwin makes the pioneering attempt to connect plant movements with the larger scheme of biological behavior. Not well received at the time, it has proven to be an enduring influence on plant movement research: he was talking about Phototropism, that plants grow towards a light source.