Reading comp PrepTest 126 · Section 2 · Question 7
Passage
Passage walkthrough
Topic: Science
Passage A
Paragraph 1 - Prairie research council report
- Paragraph note
- Effects of introduction of purple loosestrife (bad)
- Views, minor Meta-Structures, points of intersection, and the author's attitude
- Intro - Early 1800s by settlers
- Spread throughout midlatitude wetlands
- 50% of native biomass displaced, and weed blocks maintaining themselves
- Wildlife - Not well studied, hurt birds and furbearing animals, threaten endangered vertebrates
- Faster in disturbed habitats
- Can’t stop with digging weeds out (just slow); Glyphosate works but could hurt native plants
Paragraph 2
- Paragraph note
- Future
- Views, minor Meta-Structures, points of intersection, and the author's attitude
- Need to find means of control
- Current - Need to detect early and eradicate; can’t control after takes hold
Passage B
Paragraph 1 - Journal of sociology
- Paragraph note
- Argument of scientific community (Author disagrees)
- Views, minor Meta-Structures, points of intersection, and the author's attitude
- Scientific community - Purple loosestrife a scourge to be battled to save nature
- Author hints that he disagrees (“apparently”, “is portrayed”, “the...literature discusses”, “according to the scientific community”)
Paragraph 2
- Paragraph note
- Real motive behind war against loosestrife
- Views, minor Meta-Structures, points of intersection, and the author's attitude
- Driven by desire to control nature (human desires)
- Birds - Only one threatened by loosestrife
- Furbearing mammals - None threatened by loosestrife
- Impact - Lower these populations, cutting into profits that can be made on them
Main Points:
Passage A - Purple loosestrife is an environmental scourge that must be controlled, but current means of doing so are inadequate.
Passage B - The war on purple loosestrife isn’t a war to protect nature but rather to control it, allowing people to continue to make money off of more valuable natural resources.
Key Lines?Passage A:
- Lines 5-6 - A list of the negative effects of purple loosestrife is started
- Lines 24-26 - What is needed long-term
Passage B:
- Lines 30-33 - An opposing point is noted
- Lines 46-50 - The Author’s viewpoint, calling into question the opposing point (or, at least, it’s motives)
- Lines 53-55 - One premise of the opposing point is undermined
- Lines 57-58 - Another premise of the opposing point is undermined
- Lines 59-62 - The true motive is explained
Meta-Structure? Relationship Between Passages?
These passages are strongly related, staking out separate sides of the same debate. That debate is over the fight against purple loosestrife. Passage A argues that it’s an environmental scourge that’s hurting local wildlife (Lines 5-8; most of Paragraph 1), and thus means to control its spread must be developed (Lines 24-26), as current ones are inadequate (Lines 18-23). Passage B directly attacks the scientific literature that makes this argument (Lines 36-40) - in other words, it directly attacks Passage A - to say that any efforts to control loosestrife are based on a desire to control nature (Lines 46-50) and exploit it for economic gain (Lines 59-62). Passage B even goes directly after the evidence presented in Passage A - the discussion of the threat to native waterfowl and furbearing mammal populations.
List (Passage A) - Passage A presents a list of effects of purple loosestrife on native wildlife throughout Paragraph 1, so we should expect some questions about elements on that list.
Rebuttal (Passage B) - Passage B directly rebuts the argument in Passage A, calling out the “scientific literature” of which it’s an example and directly rebutting specific claims made in that passage (about waterfowl and furbearing mammals).
Last Thoughts?It’s pretty rare that we get sources for a passage, let alone both passages in a comparative set. You should absolutely have noted the two sources, as that could help you determine the likely tone and focus of the passages. Both are academic in nature, while the former was more likely to focus on nature/science and the latter on a human aspect of whatever is being discussed. There was a bit more opinion in each than we might have expected (“disastrous”; “liberate” and “tyrannical”), but that becomes noteworthy since it goes against our expectations - and thus it “sticks” in our mind better!
Also, Passage B is a great exercise in two things. First, reading an Author’s negative opinion of an opposing view that it’s explaining. In Paragraph 1, the Author of Passage B presents the argument made in Passage A. There are, however, a lot of examples of language that suggests he doesn’t buy that argument. Things such as “apparently” and “is portrayed...as” - words that show he doesn’t fully buy that view. Second, not buying into a main point too early. If you missed those language cues and the pivot in Paragraph 2, the questions would be much harder, as you might think that the Authors of Passages A and B are much more aligned than they actually are!
Question prompt
Why the credited answer is right
Credited answer: A
The notes below walk through why it fits the stem and how to eliminate the rest.
Question Type
Strategy Overview
Answer Anticipation
Answer choices
-
Afurbearing animals
Why choice A matches the stem
(A) (Line 12; Line 56) Passage A uses the effects of purple loosestrife on furbearing mammals to support its case that the plant needs to be controlled. Passage B argues that those effects are more limited than argued and doesn’t justify the eradication of the plant on environmental grounds. They both mention this detail, so it’s the correct answer.
-
Bglyphosate
Why choice B is not credited
(B) (Line 21) Passage A mentions glyphosate as a potential means of controlling purple loosestrife as long as it can be established that it doesn’t have an equivalently negative impact on native plant populations. Passage B, however, doesn’t mention any means of controlling purple loosestrife since it doesn’t believe that it necessarily needs to be controlled unless for economic reasons.
-
Cthe threat purple loosestrife Remaining source text redacted.
Why choice C is not credited
(C) (Lines 59-60) Passage A argued that purple loosestrife is an environmental threat. Passage B rebutted that by arguing it’s really an economic threat. Since the economics of purple loosestrife is what Passage B uses to rebut Passage A, we can be pretty certain it doesn’t show up there.
-
Dpopular pollution ideologies
Why choice D is not credited
(D) (Line 45) “Popular pollution ideologies” doesn’t sound like something that an environmentalist would say - it sounds a bit dismissive of the environmentalist view. As such, while this shows up in Passage B, it doesn’t show up in Passage A.
-
Eliterature on purple loosestrife Remaining source text redacted.
Why choice E is not credited
(E) (Lines 36-37) Passage B references this literature to rebut it. However, Passage A is literature on purple loosestrife control, so it would be weird for it to reference itself!
What this tests
Question analytics
Based on historical answer selection rates for this question.
Answer choice distribution
Accounts
Save your place across PrepTests
Bookmark questions, build weak-spot lists, and pick up exactly where you left off—built for serious repeat practice.
No payment yet. We will only email when accounts open.
Already have an account? Log in
Deeper help
Ask follow-ups on any step
Optional AI tutor mode will let you interrogate assumptions, compare answers, and drill weak patterns without leaving the page.
Human-written explanations stay primary; AI is an add-on when you want it.
Discussion
No threads yet—be the first to ask a question or share an approach.