PT157.S3.Q15 > Question

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The author hypothesizes that ants are more likely to live in healthy orchid species because the ants store organic matter, thereby providing the orchids with additional nutrients.

The author assumes that the organic matter brought by the ants are causing the orchids to be healthier. It could be equally true that healthy orchids attract ants to store their nectar (or some other variable).

The author also assumes that the ants’ presence does not harm the orchid in other ways.

If anything, this strengthens the link between organisms, bolstering the health of orchids. Thus, this does not weaken the argument.

While this suggests that the ants may not provide unique nutrients, it does not explain why the orchids are healthier. You have to make some unwarranted assumptions for this to work.

While this may look unrelated, it provides another explanation for why orchids with ants are healthier. If the ants hunt a species prone to eating the orchid’s roots, it explains the orchid’s improved health.

It does not matter whether the ants pollinate the plant. This does not provide an alternative explanation or weaken the argument.

This is not specific enough to be applied to the ants and orchids. Also, it does not address why the orchids are healthier.

PrepTest 157 - Section 3 - Question 15

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