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555-605 Level|   Long Passage|   Science|                     
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1. The correct answer is (C) "Behavior in naked mole rat colonies may well be a close vertebrate analogue to behavior in eusocial insect societies." This is supported by the passage's description of the similarities between the extreme altruism observed in eusocial insects and the behavior of naked mole rat colonies.

2. The correct answer is (B) "Age." The passage mentions that Jarvis' work suggests that differences in growth rates may influence the length of time an individual performs a task, regardless of its age. This challenges the assumption that age alone is the determining factor for task performance.

3. The correct answer is (B) "In naked mole rat colonies, the performance of tasks is less rigidly determined by body shape." The passage states that differences in behavior among naked mole rat colonies are primarily related to reproductive status, body size, and possibly age, rather than body shape. This indicates that task performance is less rigidly tied to body shape in naked mole rat colonies compared to eusocial insect societies.

4. The correct answer is (B) "She exerts chemical control over the colony." The passage mentions that the queen maintains her breeding status through a mixture of behavioral and presumed chemical control. While the passage does not explicitly state that she exerts chemical control, it implies that chemical control is a likely mechanism for maintaining her reproductive dominance.

5. The correct answer is (E) "Breeding is not dominated by a single pair of dogs." The passage mentions that Lycaon pictus, the wild dog, is an exception among cooperatively breeding vertebrates, as breeding is dominated by a pair of breeders rather than a single female. This suggests that breeding in the social group is not dominated by a single pair of dogs.

6. The correct answer is (A) "Naked mole rats exhibit an extreme form of altruism." The passage describes the extreme form of altruism observed in naked mole rat colonies, where individuals cooperate and sometimes sacrifice their own opportunities for the good of others. This distinguishes naked mole rats from other known vertebrate groups.

7. The correct answer is (C) "Qualify the extent to which two previously mentioned groups might be similar." The third paragraph of the passage contrasts the rigid caste systems in eusocial insect societies with the differences in behavior related primarily to reproductive status, body size, and possibly age in naked mole rat colonies. This qualifies the extent to which the two groups might be similar in terms of their social organization and division of labor.
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Understood the main point of the passage and every paragraph completely, still I was able to get only 3 questions correct. Mostly I got stuck between two choices, need help where I am going wrong. :(
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Hello from the GMAT Club VerbalBot!

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