Primate Evolution

Which of the following environmental factors is the reason that bipedalism evolved in early hominins?

• Bipedalism evolved when the environment changed from grassland to rainforest.

• Bipedalism evolved when the environment changed from rainforest to grassland.

• Bipedalism evolved when the environment was constantly cycling between different climates in a short period of time.

• Bipedalism evolved because early homins moved out of Africa into a new region.

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NGSS.HS-LS4-5

Why was bipedalism helpful to hominins that lived in grasslands?

• Bipedalism helped hominins travel long distances because they used less energy than apes to walk.

• Bipedalism made hominins better able to climb trees.

• Bipedalism allowed hominins to use all four limbs to get around.

• Bipedalism helped hominins to swim in large lakes that started to appear in Africa.

What part of the early hominin skeleton tells us that humans were able to use tools better than apes?

• Humans have a wider thumb bone. This shows that they can handle tools more easily than apes.

• Humans have opposable thumbs and apes do not.

• There is no evidence on the hominin skeleton that shows hominins used tools.

• Apes hands are too big to hold small tools.

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NGSS.MS-LS4-2

how has the hominid brain evolved over time

• increase in size, no change in convolution

• increase in size and convolution

• no change in size of convolution

• decrease in size

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

How are human feet different to primate feet

• primate feet have a large big toe

• primates cant walk on their feet

• Primate feet can grip

• Human feet have both a longitudinal and transverse arch

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NGSS.MS-LS4-2

What is not and advantage of walking upright

• easier to give birth

• more energitically favourable over long distances

• decreased UV exposure of body

• frees hands for tool use

As hominins became bipedal the

• spine becomes S shaped and the foramen magnum moves to the back of the skull

• spine becomes C shaped and the foramen magnum moves to the middle of the skull

• spine becomes C shaped and the foramen magnum moves to the back of the skull

• spine becomes S shaped and the foramen magnum moves to the middle of the skull

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NGSS.MS-LS4-2

As hominins become bipedal

• The pelvis becomes wider and more bowl shaped, carrying angle develops

• the pelvis becomes narrower and shorter, carrying angle decreases

• the pelvis becomes wider, carrying angle decreases

• the pelvis becomes narrower, carrying angle develops

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NGSS.MS-LS4-2

Compared to other primates humans have

• no diastema, u shaped dental arcade

• no diastema, parabolic shaped dental arcade

• a diastema, u shaped dental arcade

• a diastema, parabolic shaped dental arcade

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NGSS.MS-LS4-2

non human primates have

• more distinct brow ridges and less prognathism

• less distinct brow ridges and more prognathism

• more distinct brow ridges and prognathism

• less distinct brow ridges and prognathism

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NGSS.MS-LS4-2