What does the morphological species concept use as a basis for classification?

The morphological species concept classifies organisms based on observable physical characteristics. This approach focuses on traits such as size, shape, and structure, allowing scientists to distinguish different species based on their morphological features. This concept is particularly useful in studying organisms that may not be easily observed in their behavior or genetic makeup, such as fossils or invertebrates. By relying on these visible characteristics, researchers can create a clear and systematic classification regardless of the genetic diversity or behavioral differences within a group.