AP BIOLOGY

Detailed explanation-1: -On one hand, some species of New World monkeys possess prehensile tails, meaning they can use their tails to grasp or hold on to objects (2). Their tails can aid these monkeys in finding and eating food in the canopy as well as moving amongst the trees, as their tails provide extra support and balance.

Detailed explanation-2: -The noses of New World monkeys are flatter than the narrow noses of the Old World monkeys, and have side-facing nostrils. New World monkeys are the only monkeys with prehensile tails-in comparison with the shorter, non-grasping tails of the anthropoids of the Old World.

Detailed explanation-3: -Most Old World monkeys have tails (the family name means “tailed ape"), unlike the tailless apes. The tails of Old World monkeys are not prehensile, unlike those of the New World monkeys (platyrrhines). Several Old World monkeys have anatomical oddities.

Detailed explanation-4: -The forests in Central and South America are chock full of vines that monkeys use like tightropes to traverse between trees, so having an extra grip is helpful for balance and helpful in case of emergency.