Free Practice Question
CR · Critical Reasoning
555-605
Weaken
A group of paleontologists discovered a skull fossil in a sedimentary layer. Initially, they believed the skull belonged to a young mastodon, a now-extinct relative of modern elephants, due to the size of the teeth which appeared to be juvenile. However, mastodons are known for their large tusks, and the skull's structure would not accommodate the tusks of an adult mastodon. Based on this, the paleontologists concluded that the skull fossil indicates a different species closely related to the mastodon.
Which of the following, if true, would best provide evidence showing that the conclusion above is possibly flawed?
Which of the following, if true, would best provide evidence showing that the conclusion above is possibly flawed?
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The juvenile skull of a species related to a mastodon is smaller than that of a mastodon.
B
The growth pattern of tusks provides sufficient evidence for the classification of ancient species.
C
In order for the tusks of an adult mastodon to grow, several juvenile teeth must first be lost.
D
The tusks of an adult woolly mammoth, a close relative of the mastodon, are similar in size to those of an adult mastodon.
E
Many fossils remain that have not been definitively assigned to any species.
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priyankaFeb 13, 2025
thanks!
Details
Difficulty
555-605
Type
CR