Hominid evolution

what can be concluded about the jaw size and brain size of hominids as they evolve?

• The jaw size decreased while the brain size increased

• The jaw size increased while the brain size decreased

• Both jaw size and brain size increased

• Both jaw size and brain decreased

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Species in the family that includes humans, but not great apes are called hominids. The first hominids appeared between 6 and 7 million years ago. Since then, several species of hominids have evolved. As the brain size of hominids increased, which of the following also occurred?

• The teeth became larger

• The browridges became smaller

• The jaws became larger

• The pelvis became narrower

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NGSS.MS-LS4-2

Modern humans are classified as hominids. Several other hominid species evolved and died out in the past. Which of the following occurred last in hominid evolution?

• The development to walk upright

• an increased in the size of the brain

• The development of spoken language

• a decreased in size of teeth and jaw

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The diagram below shows a human brain. What part of the brain is labeled 2 in the diagram?

• Cerebellum

• Pons

• Medulla

• Cerebrum

Which of the following is the occipital lobe?

• 4

• 3

• 2

• 1

Concussions are dangerous head injuries that can result from a forceful impact to the head or even very sudden and violent head movements. Many parts of the brain can be affected by a concussion, including the cerebellum, which regulates balance. Where is the cerebellum located on the diagram below?

• Region 1

• Region 2

• Region 3

• Region 4

Which of these are LEAST LIKELY to show common ancestry?

• DNA

• Homologous structures

• Vestigial structures

• Analogous structures

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What type of evidence is represented in the picture above:

• Analogous structures

• DNA

• Vestigial structures

• Homologous structures

According to this data, the unknown bacterial species is most closely related to:

• Species I

• Species II

• Species III

• Species IV

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NGSS.MS-LS4-2

Humans belong to the hominid group, most of which are now extinct. One of the earliest hominids was Australopithecus afarensis. The bones of this species suggest that it walked upright on two legs (bipedalism) and had a brain about the size of a modern chimpanzee. What inference can be made from this observation?

• Australopithecus afarensis had a large brain and made tools

• Bipedalism evolved before hominid cranial capacity increased

• The ability to make tools evolved along with bipedalism

• Australopithecus afarensis was about as tall as later hominids

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