Most degree programs in science are tightly specialized and designed to prepare the student for a relatively specific career. A syllabus in biological and physical sciences, by contrast, takes a broader approach.
Depending on the university, each student can adapt their subject choices to some extent. This is often done to develop a firm foundation of skills and knowledge in some area that interests them, perhaps one without a dedicated major of its own. The resulting degree can then be used as a basis for postgraduate or another kind of further study.
A multidisciplinary degree such as this gives the student a thorough introduction to the scientific method, interpreting data, and general research techniques. This makes biology and physical sciences a good choice for someone who would like to be a scientific generalist with a focus on life sciences, perhaps with a view to branching out into other fields such as business.