What are lithophytes?

Explanation

### Step-by-Step Solution:

1. **Definition of Lithophytes**: Lithophytes are defined as plants that grow on rocky surfaces. This means they have adapted to thrive in environments where soil is scarce or non-existent.

2. **Habitats**: Lithophytes are considered the first inhabitants of rocky surfaces. This indicates that they can colonize areas that are otherwise inhospitable for many other types of plants.

3. **Examples of Lithophytes**: Some common examples of lithophytes include various types of algae, liverworts, and ferns. These plants have special adaptations that allow them to survive in rocky environments.

...