The answer depends on how you define "biological physics." It's a broad term that encompasses the application of physical principles to biological systems.

Here's a breakdown of how each field relates to biological physics:

* Botany: Botany is the study of plants. Biological physics finds numerous applications in botany, including:

* Plant Mechanics: Understanding the mechanical properties of plant tissues (strength, flexibility, etc.)

* Photosynthesis: Modeling the energy transfer processes within photosynthesis

* Plant Growth: Studying the physical forces that drive plant growth and development

* Biomechanics: Analyzing the motion and function of plant parts (leaves, stems, roots)

* Astronomy: Astronomy is the study of celestial objects and phenomena. While it's a separate field from biology, there are some overlaps with biological physics:

* Astrobiology: This field investigates the possibility of life beyond Earth, often involving considerations of physical and chemical processes relevant to life.

* Biosignatures: Identifying potential signs of life on other planets or moons involves applying physical principles to understand how life leaves traces.

Therefore, both botany and astronomy can be considered part of biological physics when focusing on specific aspects.

However, it's important to remember that "biological physics" is a vast field, and these examples are just a small sample of its applications.