AP BIOLOGY

EVOLUTION

SOURCES OF VARIATION IN A POPULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Horses have hooved feet that help them run for long distances.
A
behavioral
B
structural
Explanation: 

Detailed explanation-1: -What are Hooves? Horses are digitigrade which means they walk using their tips of their toes. Because of this, they need a strong, insensitive surface to protect their sensitive toe tips from hard surfaces.

Detailed explanation-2: -A horse’s hoof is composed of the wall, sole and frog. The wall is simply that part of the hoof that is visible when the horse is standing. It covers the front and sides of the third phalanx, or coffin bone. The wall is made up of the toe (front), quarters (sides) and heel.

Detailed explanation-3: -When you pick up the horse’s hoof, the frog is immediately obvious – it’s the tough, thick, V-shaped structure pointing down from the heels. It protects the digital cushion beneath it, aids in traction and circulation in the hoof, and partly acts as a shock absorber when the horse moves.

There is 1 question to complete.