Morphological traits refer to the physical characteristics and structures of organisms, including their shape, size, and color. These traits can be observed in various parts of an organism, such as leaves, flowers, and body structures. Morphological traits are essential for identifying species and understanding their adaptations to different environments. In biology, studying morphological traits helps scientists classify organisms and explore their evolutionary relationships. For example, the beak shape of Darwin's finches varies among species, reflecting their adaptation to different food sources. This variation provides insights into how species evolve over time in response to environmental pressures.