Britannica
Sources used in this answer
How is morphology different from physiology?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Biology
A researcher using a microscope to examine a specimen in the laboratory.
In biology, morphology and physiology are distinct but closely interrelated fields of study.
- Morphology is the study of the size, shape, and structure of organisms, as well as the arrangement of their constituent parts. It examines biological forms ranging from macroscopic structures, such as bones and leaves, to microscopic details of cells and complex molecules like DNA. Its primary focus is on the physical "form" of an organism.12
- Physiology is the study of the functions of living organisms and their parts, including tissues and cells. Rather than focusing on physical structure, it investigates the processes, activities, and mechanisms that allow organisms to live.134
While these fields are often contrasted, their separation is considered somewhat artificial because structure and function are fundamentally linked. A thorough understanding of morphology is essential for fields like medicine, as it provides the basis for identifying structural changes caused by disease. Conversely, modern physiology often emphasizes functional specializations—such as metabolism and transport—at the cellular and molecular levels to explain how organisms operate.14