What does morphology refer to in biological terms?

Morphology in biological terms specifically refers to the form and structure of an organism. This includes the study of the size, shape, and arrangement of different parts of an organism, whether it be at the macroscopic level (such as the anatomy of animals and plants) or at the microscopic level (such as cellular structures). By focusing on morphology, scientists can gain insights into how the physical characteristics of organisms relate to their function and adaptation in their environments.

In contrast, the other options deal with different aspects of biology: movement capabilities pertain to physiology and behavior, cellular function and organization involve how cells operate and are structured, while genetic makeup and diversity focus on the genetic composition of organisms and their evolutionary relationships. Each of these areas is significant in its own right, but they do not encapsulate the concept of morphology, which is fundamentally concerned with the physical form and structural characteristics of living organisms.