Final answer:
The statement that molars may have wrinkled enamel patterns rather than smooth ones is true, as this specific adaptation helps certain herbivores grind down tough plant material efficiently.
Step-by-step explanation:
The statement about low-crowned molars with enamel that is 'wrinkled' rather than smooth refers to a specific adaptation seen in some herbivorous mammals that use their molars for grinding tough plant material. This adaptation is true as certain herbivores have complex, ridged, or wrinkled enamel patterns on their molar surfaces to increase the efficiency of grinding down fibrous plant material. This is in contrast with other browsers, which may have smoother molar surfaces more suitable for their diet.
For example, molars in herbivorous animals like cows and horses can be used for grinding down tough, fibrous plants. The enamel ridges act like serrations that help to break down plant cell walls more effectively, facilitating the digestion process. In contrast, animals that have a diet more focused on softer foods or meats might have smoother molar surfaces suitable for their food processing needs.