Evolution of Homo sapiens

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Evolution of Homo sapiens - 1920

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1. Given the diagram above, describe how the morphologic structure of the skull changed from our early ancestors to the current species, Homo sapiens. *

a) The brain cavity is larger and the face is less sloping

b) The brain cavity is smaller and the face is more sloping

c) The brain cavity is larger and the face is more sloping

d) The brain cavity is smaller and the face is less sloping

2. What is the name of the hominid that represents upper left skull? *

For questions 2 and 3 please view the activity: http://humanorigins.si.edu/evidence/human-fossils/mystery-skull-interactive

homo neanderthalensis (60,000 years ago)

homo neanderthalensis (70,000 - 50000 years ago)

homo heidelbergensis

homo neanderthalensis (350,000 years ago)

3. What is the name of the hominid that represents the upper right skull? *

Homo habilis

Homo erectus

Paranthropus boisie

icant beliv i felfrit

4. How did the arm that was found at the site compare of that of the Homo sapien? *

Start watching At 24:00 of the video: https://www.youtube.com/watch?v=FFuwyBEq1IA For questions 4, 5, 6.

The arm of the discovered hominid was shorter than the Homo sapien like the chimpanzee

The arm of the the discovered hominid was longer than the Homo sapien like the human

The arm of the the discovered hominid was longer than the Homo sapien like the chimpanzee

They were all the same length

5. Why would the scientist expect the hand of the discovered hominid to have curved fingers and a short thumb? *

Because long arms and curved fingers benefit climbing

Because short arms and curved fingers benefit climbing

because long arms and noncurved fingers benefit climbing

because short arms and noncurved fingers benefit climbing

6. What does the morphology of the non-curved hand on a long arm reveal to us? *

The newly discovered hominid is the missing link from ape to human.

The early hominid found spent less time climbing and it developed a lower need for curved hand.

This hominid although older than other known hominids maybe evolutionary more closely related to us (homo sapiens)

Evolution is constant and very slow.

7. Why was the early hominid found determined to be the "base of the lineage that leads to us"? *

Please use the following link for questions 7: http://youtube.com/watch?v=oxgnlSbYLSc

It had short arms, non-curved fingers, tiny brain

It had long arms, curved fingers, tiny brain

It had short arms, curved fingers, tiny brain

It had short arms, human foot, large brain

8. What might be a ground breaking find of the multiple skeletons found in the cave? *

This will be the first time multiple skeletons of early hominids were ever found

This would be the first time a new hominid species has been found

This would be the most complete skeletons of early hominids

This might provide evidence that these early hominids cared for the dead

9. Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities? *

Please read pages 463 - 465 in your textbook for this question. Please read all choices before answering.

A) by identifying the bones as being homologous structures

B) by the principle of convergent evolution

C) by proposing that humans, bats, and dolphins share a common ancestor

D) Three of the statements above are correct.

E) Two of the statements above are correct.

10. If two modern organisms are distantly related in an evolutionary sense, then one should expect that *

Please read pages 463 - 465 in your textbook for this question. Please read all choices before answering.

A) they live in very different habitats.

B) they should share fewer homologous structures than two more closely related organisms.

C) their chromosomes should be very similar.

D) they shared a common ancestor relatively recently.

E) they should be members of the same genus.

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