In a previously unique approach, the book describes the structural elements of plants according to their function. This connects comparative anatomy with the physiological processes, illustrated by a wealth of instructive images. What makes this textbook special is its focus on describing the structural elements of plants based on their function. In this way, plant anatomy is linked to the physiological processes occurring in plants. The integration of both fields of study allows for an examination of plant performance in terms of growth and substance synthesis. This also highlights the contribution that plants make to life on Earth. The book provides a foundation for assessing the dynamics of plant life and its preservation through reproduction.