Human Evolution Answers

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1
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Consider the timeline of the evolution of human ancestors.Which series correctly lists the order of species (from A to E) that belong on the timeline?

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A
A. africanus, A. afarensis, H. erectus, H. habilis, H. sapiens
B
H. habilis, A. africanus, H. erectus, A. afarensis, H. sapiens
C
A. afarensis, A. africanus, H. habilis, H. erectus, H. sapiens
D
H. habilis, H. erectus, A. afarensis, A. africanus, H. sapiens
2
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A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human?

A
large jaw bone for muscle attachment
B
pelvic blades rotated inward
C
very long arms
D
thick rib cage
3

Which feature is common to all primates?

A
large brain relative to body size
B
upper body weight distributed over pelvis
C
pelvis rotated inward
D
two arches in foot
4

The fossil record indicates that the earliest hominids most likely originated on which continent?

A
Africa
B
Asia
C
North America
D
Europe
5

Which best describes the lower body structures of humans and chimpanzees?

A
The big toes of humans and chimpanzees are enlarged.
B
The human foot has three arches, but the chimpanzee foot only has one.
C
Human knees are very mobile, but chimpanzee knees are stabilized by tendons.
D
The blades of the human pelvis are not rotated inward like those of the chimpanzee.
6

In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal. The article was titled “Environmental Hypotheses of Hominin Evolution.” Which statement would discredit Potts’s objectivity if it were included in the article?

A
I believe the human race is capable of great things.
B
The data show that the human population is adaptable.
C
The fossil record suggests huge variations in the human population.
D
Variation allows for the process of evolution.
7

An anthropologist finds a fossil that is 4 million years old. Its pelvis suggests it walked upright. Which species could the specimen belong to?

A
Australopithecus africanus
B
Australopithecus afarensis
C
Homo habilis
D
Homo erectus
8

Which statement is supported by the fossil record?

A
Chimpanzees are ancestors of modern humans.
B
Neanderthals are the most recent ancestor of modern humans.
C
Most ancestors of modern humans originated in Europe.
D
Chimpanzees and modern humans shared a common ancestor.
9

In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal. The article was titled “Environmental Hypotheses of Hominin Evolution.” Which statement about Rick Potts would most increase his authority?

A
Potts has read hundreds of websites about human evolution.
B
Potts has been interested in human evolution since a very young age.
C
Potts is the director of the Smithsonian’s Human Origins Program.
D
Potts has posted on many blogs about human evolution.
10

Which statement helps explain why humans have a highly developed forebrain and midbrain compared to other primates?

A
Humans have complex social skills.
B
Humans have developed tools to aid them in their tasks.
C
Humans have the ability to communicate.
D
Humans have the ability for rational thought.

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