PT116.S2.Q25 > Question

SECTION 1 · rc

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Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21

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Question 22 Question 23 Question 24 Question 25 Question 26 Question 27 Question 28

SECTION 2 · lr

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SECTION 3 · lr

SECTION 4 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2

Question 8 Question 9 Question 10 Question 11 Question 12 Question 13

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Question 14 Question 15 Question 16 Question 17 Question 18 Question 19

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Burying beetles destroy other burying beetles’ eggs to gain a comparative advantage, so why do they equally care for all the larvae once they’ve hatched?

The correct answer must draw a distinction between eggs and larvae, since burying beetles attack the eggs of their competitors, but not their larvae. One possibility is that, once the larvae start moving around, they can’t tell the difference between their competitors’ larvae and their own.

This could explain why beetles might want their eggs to hatch earlier than their competitors, but isn’t helpful in explaining why they don’t attack their competitors’ larvae.

The stimulus establishes that the beetles want to minimize the sizes of their opponents’ broods, so there’s no reason to believe that they would want the greatest possible number of larvae—which would include their competitors’—to survive.

This would explain why the beetles attack their competitors’ eggs, but not their larvae. The beetles would probably be unable to avoid adversely affecting their own brood, so they don’t attack any larvae.

Information about how the beetles defend against other enemies doesn’t help explain why they don’t attack their competitors’ larvae.

If anything, this would make the beetles’ behavior even harder to explain. If space to house larvae is limited, then we would expect the beetles to compete even more intensely for it. This doesn’t explain why the beetles don’t attack their competitors’ larvae.

PrepTest 116 - Section 2 - Question 25

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