Question

In the evolution of the horse, the shift from being flat-footed to running on hooves corresponds to which specific change?

Options

• Changes in teeth for grazing

• A reduction in the number of digits

• An increase in the number of digits

• The development of webbed feet

Answer 1

The reduction in the number of digits in horse ancestors resulted in the shift from being flat-footed to running on hooves. This was one of the adaptations to the change from soft jungles to dry, hard grassy plains.