Human Evolution

The ability to walk upright on two legs is called:

• bipedalism

• quadropedalism

• bicyclepedalism

• tripedalism

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All primates have the following features EXCEPT:

• large brains

• excellent vision

• grasping hands

• bipedalism

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Click all the correct answers!

Bipedalism probably evolved because...

• The climate in Africa changed 10 million years ago.

• Rain forest changed into woodlands.

• Our ancestors depended on trees less and less.

• Our ancestors needed to communicate using language.

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A large hole in the base of the skull where the spinal cord connects to the brain:

• foramen magnum

• sagittal crest

• cranial capacity

• S-shaped spine

All of these help us to be bipedal EXCEPT:

• S-shaped spine

• short, wide pelvis

• arched feet

• opposable thumbs

Homo sapiens and other species of humans belong to the same group called:

• hominins

• primates

• homo sapiens

• Lucy

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All of these are advantages of bipedalism EXCEPT:

• Hands are free to carry food.

• Save energy when walking long distances.

• Hands are free to use tools.

• Easier to balance on two legs.

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Which hominid species is most closely related to Homo sapiens?

• Homo habilis

• Australopithecus afarensis

• Homo neanderthalensis

• Homo heidelbergensis

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This helps primates to find ripe fruits and more nutritious leaves.

• grasping hands

• slow growth

• large brain

• color vision

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Primates grow slowly and have fewer offspring because...

• Large brains take longer to develop

• Both parents need to take care of the offspring

• Primates have color vision and grasping hands

• Primates are just cool like that

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