Introduction :
The fossils discovery suggests that the australopithecines and earlier hominoids are just reverse of each other. The autralopithecines have evolved massive jaws, cranial skeletons, and molar teeth that help in increase the chewing forces. They have a difference in the bipedal the earlier hominoids have comparatively longer legs.
Answer to Problem 7STP
Correct answer :
The correct answer is option (B) bipedalism.
Explanation of Solution
Explanation/justification for the correct answer :
Option (B) bipedalism. The characteristic that distinguishes the australopithecines from earlier hominoids is bipedalism. The autraopithecines is human and ape like combination, they walk on two legs. So, the correct answer is option (B).
Explanation for incorrect answer :
Option (A) binocular vision. The binocular vision of both australopithecines and hominoids has no much difference. So, this is an incorrect option.
Option (C) finger nails. The finger nail of both australopithecines and hominoids has no much difference. So, this is an incorrect answer.
Option (D) opposable thumb. The australopithecines and hominoids both have opposable thumb. But the earlier hominoid has evolved one. So, this is an incorrect answer.
Chapter 20 Solutions
Biology Illinois Edition (Glencoe Science)
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Campbell Essential Biology (6th Edition) - standalone book
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Becker's World of the Cell (9th Edition)
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