Which of the following features of ancient horses is not an adaptation for living on open grasslands?
A)multiple toes
B)complex patterns of ridges on molar and premolars
C)lengthening of limbs
D)increase in body size
E)high-speed locomotion

Question

Quizplus · Accepted Answer

Multiple toes are not an adaptation for living on open grasslands. In fact, having multiple toes (such as in the case of the three-toed horse) is a primitive trait that was eventually lost as horses evolved and adapted to life on the open plains. The other options listed are adaptations for living on open grasslands, including the complex ridges on molars and premolars for grinding tough grasses, lengthening of limbs for faster running and greater visibility, increase in body size for improved endurance and protection from predators, and high-speed locomotion for evading predators and covering large distances across open terrain.

Which of the Following Features of Ancient Horses Is Not