menu
Sign up

Fossilized Foot Bones Show That Some Hominids Living Between 3

Question 23
Multiple Choice

Fossilized foot bones show that some hominids living between 3 and 3.5 mya walked upright but had partially opposable big toes.This suggests that A) the shift to bipedalism was not sudden and complete, and the earliest bipedal hominins may have also spent some time in the trees for shelter or to find food. B) the shift from quadrupedalism to bipedalism happened abruptly about 2.5 mya when hominins could no longer find any food in trees. C) hominins actually shifted from bipedalism to quadrupedalism, as it proved to be an advantage when acquiring food. D) having a partially opposable big toe helped bipedal hominins run faster to avoid their predators.

Related questions
Q 24
The positioning of the toe indicated by the arrow in the figure below suggests that the animal with this fossil hominid foot A) most likely always traveled on four feet. B) most likely spent all of its time swinging in the trees. C) traveled mostly on four feet but also spent a great deal of time swinging in the trees. D) probably walked upright on two feet and may have spent time in trees.
Q 25
An archaeological dig in Africa discovers a collection of stone tools along with several skeletons in a cave.These bipedal skeletons date to about 3.5 million years ago and show no evidence of a partially opposable toe.Measurements indicate the brains would have been a little less than a third of the volume of modern humans.The teeth found on these skeletons look more like those of an ape than those of a human.This skeletal discovery is most likely which of the following? A) Sahelanthropus tchadensis B) Ardipithecus ramidus C) Australopithecus afarensis D) Homo erectus
Q 26
Examine the skulls shown in the figure below.What can be said regarding trends in braincase size and teeth over time? A) Older hominin fossils have larger braincases and generally smaller, more humanlike teeth. B) More recent hominin fossils have larger braincases and generally smaller, more humanlike teeth. C) More recent hominin fossils have smaller braincases and generally larger, more apelike teeth. D) There is no apparent change in braincase size or size and structure of the teeth in hominins.
logo
© 2020 QuizPlus. All Right Reserved