PrepTest 127, Section 4, Question 9
Mechanisms for recognizing kin are found throughout the(466 more words not shown)
The passage states which one(8 more words not shown)
- AThey develop the(5 more words not shown)
- BThey feed only(3 more words not shown)
- CThey change in(6 more words not shown)
- DTheir carnivorousness constitutes(13 more words not shown)
- ETheir carnivorousness would(17 more words not shown)
Reading the passage
We need a stated fact about the spadefoot tadpoles. Recall the sequence: they begin as omnivores, some become larger carnivores after eating an animal, and the cannibals discriminate between siblings and nonsiblings. We'll check the choices against those actual observations.
Working the answers
- A
Recognizing a relative isn't the same as recognizing whether another animal is a carnivore. That second ability isn't stated.
- B
They feast on other animals, even other animals of the same species (paragraph 2). The diet isn't restricted to omnivorous tadpoles. The account also mentions freshwater shrimp.
- CCorrect
The change causes a tadpole to become “larger and exclusively carnivorous.” Its size changes along with its diet.
- D
The sibling-sparing behavior illustrates support for inclusive fitness theory. The author doesn't present carnivorousness itself as evidence against it.
- E
No such necessary condition is stated. The discussion connects behavior with genetic representation; it doesn't claim carnivorousness could occur only if it benefits the evolutionary success of the whole species.
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