Test Three

Question 1

Gracile

Answer 1

Member of the genus Australopithecus possessing a more lightly built chewing apparatus; likely had a diet that included more meat than that of the robust australopithecines

Question 2

Hominin

Answer 2

Member of the primate family hominidae by bipedal posture and in more recently evolved species, a large brain

Question 3

Bipedal

Answer 3

A special form of locomotion on two feet found in humans and their ancestors

Question 4

Arborial

Answer 4

Value of grasping hands and stereoscopic vision for life in the trees

Question 5

Foramen magnum

Answer 5

Hole in the occipital bone through which the spinal cord connects to the brain

Question 6

Morphology

Answer 6

Study of the forms of things

Question 7

Valgus angle

Answer 7

Knee knocked outward

Question 8

Last common ancestor (LCA)

Answer 8

Common descent

Question 9

Sahelantheopus tchandensis

Answer 9

Extinct hominine species that is dated to about 7 million years ago possibly very close to the time of the chimpanzee.

Question 10

Robust

Answer 10

Several species within the genus Australopithecus who lived from 1.1 to 2.5 mya in the eastern and southern Africa; known for the rugged nature of their chewing apparatus (large back teeth, large chewing muscles, and bony ridge on their skull tops for the insertion of these large muscles