AP BIOLOGY

CLASSIFICATION

CHARACTERISTICS OF PRIMATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A/An ____ is a type of mammal characterized by opposable thumbs and binocular vision.
A
Hominid
B
Primate
C
Mammal
D
Reptile
Explanation: 

Detailed explanation-1: -Humans, apes, and monkeys are primates. Almost all primates have opposable thumbs and binocular vision. Hominids, a subgroup of primates, include humans and their humanlike ancestors.

Detailed explanation-2: -ONLY primates have binocular vision and grasping hands/feet with opposable thumbs.] The first primates are often called “prosimians” or “before monkeys". Only a few prosimians survive today–lemurs, tarsiers and lorises.

Detailed explanation-3: -The great apes, including the gorilla, chimpanzee, bonobo, orangutan, and lesser apes called gibbons, all have opposable thumbs. In fact, they take opposable digits a step further – the big toe of the foot is opposable as well!

Detailed explanation-4: -A primate is any mammal of the group that includes lemurs, lorises, tarsiers, monkeys, apes, and humans. The order Primates, with its 300 or more species, is the third most diverse order of mammals, after rodents and bats.

Detailed explanation-5: -primates. … lemurs and lorises have an opposable thumb. Primates are not alone in having grasping feet, but as these occur in many other arboreal mammals (e.g., squirrels and opossums), and as most present-day primates are arboreal, this characteristic suggests that they evolved from an ancestor that was arboreal.

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