Final answer:
The cuticle of hair can differ among different species and individuals. Objective criteria include number of layers, shape and arrangement of scales, and presence of specific structures. Subjective criteria include overall texture, feel, moisture retention, and resistance to damage.
Step-by-step explanation:
The cuticle is the outermost layer of the hair shaft and its composition can vary among different species and individuals of the same species. The cuticle can be differentiated based on objective criteria such as the number of layers, the shape and arrangement of the scales, and the presence of any specific structures. For example, the cuticle of human hair typically consists of a single layer of overlapping scales, while the cuticle of some animal hairs may have multiple layers or different types of scales.
Subjective criteria for differentiating the cuticle could include factors like the overall texture and feel of the hair, its ability to retain moisture, and its resistance to damage or breakage. These subjective characteristics can vary greatly among different species and individuals of the same species. For instance, human hair typically has a smoother texture compared to the coarse texture of some animal hairs.
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