A Level Biology Practice Exam 2025 – All-in-One Study Guide to Excel in Your A Levels!

The field of anatomy primarily focuses on the structure of living organisms. Anatomy delves into the physical organization of various biological systems, including the arrangement and relationships of organs and tissues within an organism. This study can range from examining the macro-level structures, such as muscles and bones, to micro-level examination, such as cells and tissues, to understand how these structures contribute to the overall function and maintenance of the organism.

The other areas mentioned, such as behavior, function, and evolutionary relationships, are important aspects of biological sciences but fall under different fields of study. Behavioral studies explore how organisms interact with their environment, physiology looks at the functions of biological systems, and evolutionary biology examines how species are related and have changed over time. In contrast, anatomy is specifically concerned with the structural aspects of organisms, making the chosen answer correct.