Physiognomy refers to physical appearance / functional status of an ecosystem.

Explanation

**Step-by-Step Solution:**

1. **Understanding Physiognomy**: The term "physiognomy" is often used to describe the physical appearance or characteristics of an ecosystem. It encompasses the visual aspect of the ecosystem and how it presents itself.

2. **Physical Appearance**: Physiognomy focuses on the physical features of the ecosystem. This includes the types of vegetation, the structure of the landscape, and the overall visual characteristics that define the ecosystem.

3. **Functional Status**: While the term might suggest a connection to functionality, it is important to note that physiognomy primarily refers to appearance rather than the functional aspects of the ecosystem, such as energy flow or nutrient cycling.

...