AP BIOLOGY

Detailed explanation-1: -It appears obvious: the giraffe’s neck, which can grow to as much as two metres in length, has been selected because it gives its owner exclusive access to the topmost leaves of the trees, and no other animal can reach them. This, then, is an adaptation designed to avoid competition for food with other animals.

Detailed explanation-2: -A giraffe’s long neck is an adaptation that helps the giraffe reach foods that other animals can’t eat, such as leaves that are very high up in trees.

Detailed explanation-3: -The giraffe is the tallest of all mammals. It reaches an overall height of 18 ft (5.5 m) or more. The legs and neck are extremely long. The giraffe has a short body, a tufted tail, a short mane, and short skin-covered horns.

Detailed explanation-4: -The long neck of the giraffe has been held as a classic example of adaptive evolution since Darwin’s time.

Detailed explanation-5: -Charles Darwin held up giraffes as a prime example of natural selection, his theory that’s often summarized as “survival of the fittest.” Giraffes with comparably longer necks could reach food high up in trees, which gave them an advantage over other animals and members of their own species with shorter necks.