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As part of an international effort to address environmental problems

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Joined: 22 Jun 2017
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Schools: HBS, Stanford, Wharton
GMAT 1: 630 Q43 V34

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Updated on: 09 Sep 2019, 23:45
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New Project RC Butler 2019 - Practice 2 RC Passages Everyday
Passage # 196, Date : 09-Jul-2019
This post is a part of New Project RC Butler 2019. Click here for Details

As part of an international effort to address environmental problems resulting from agricultural overproduction, hundreds of thousands of acres of surplus farmland throughout Europe will be taken out of production in coming years. Restoring a natural balance of flora to this land will be difficult, however, because the nutrients in soil that has been in constant agricultural use are depleted. Moreover, much of this land has been heavily fertilized, and when such land is left unplanted, problem weeds like thistles often proliferate, preventing many native plants from establishing themselves. While the quickest way to restore heavily fertilized land is to remove and replace the topsoil, this is impractical on a large scale such as that of the European effort. And while it is generally believed that damaged ecological systems will restore themselves very gradually over time, a study underway in the Netherlands is investigating the possibility of artificially accelerating the processes through which nature slowly reestablishes plant diversity on previously farmed land.

In the study, a former cornfield was raked to get rid of cornstalks and weeds, then divided into 20 plots of roughly equal size. Control plots were replanted with corn or sown with nothing at all. The remaining plots were divided into two groups: plots in one group were sown with a mixture of native grasses and herbs; those in the other group received the same mixture of grasses and herbs together with clover and toadflax. After three years, thistles have been forced out of the plots where the broadest variety of species was sown and have also disappeared from mats of grass in the plots sown with fewer seed varieties. On the control plots that were left untouched, thistles have become dominant.

On some of the plots sown with seeds of native plant species, soil from nearby land that had been taken out of production 20 years earlier was scattered to see what effect introducing nematodes, fungi, and other beneficial microorganisms associated with later stages of natural soil development might have on the process of native plant repopulation. The seeds sown on these enriched plots have fared better than seeds sown on the unenriched plots, but still not as well as those growing naturally on the nearby land. Researchers have concluded that this is because fields farmed for many years are overrun with aggressive disease organisms, while, for example, beneficial mycorrhiza— fungi that live symbiotically on plant roots and strengthen them against the effects of disease organisms—are lacking. These preliminary results suggest that restoring natural plant diversity to overfarmed land hinges on restoring a natural balance of microorganisms in the soil. In other words, diversity underground fosters diversity aboveground. Researchers now believe that both kinds of diversity can be restored more quickly to damaged land if beneficial microorganisms are “sown” systematically into the soil along with a wide variety of native plant seeds.
1. Which one of the following most accurately expresses the central idea of the passage?

(A) The rehabilitation of land damaged by agricultural overproduction can be accelerated by means of a two-pronged strategy aimed at restoring biological diversity.
(B) Restoring plant diversity to overused farmland requires many years and considerable effort.
(C) The damaging effects of long-term agricultural overproduction argue for the modification of current agricultural practices.
(D) Soil on farmland damaged by overproduction will gradually replenish and restore itself over time if left untouched.
(E) Agricultural overproduction tends to encourage the proliferation of disease organisms in the soil as well as problem weeds.

2. Which one of the following most accurately describes the organization of the passage?

(A) A study is described, the results of the study are scrutinized, and the results are judged to be inconclusive but promising.
(B) A hypothesis is presented, evidence both supporting and undermining the hypothesis is given, and a modification of the hypothesis is argued for.
(C) A study is evaluated, a plan of action based on the study’s findings is suggested, and conclusions are drawn concerning the likely effectiveness of the plan.
(D) A goal is stated, studies are discussed that argue for modifying the goal’s objectives, and a methodology is detailed to achieve the revised goal.
(E) A problem is presented, a study addressing the problem is described, and a course of action based on the study’s findings is given.

3. The passage offers which one of the following as an explanation for why native plant varieties grew better when sown on land that had been out of production for 20 years than when sown on the plots enriched with soil taken from that land?

(A) Land that has been farmed for many years lacks certain key nutrients.
(B) Land that has been farmed for many years is usually overrun with harmful and aggressive organisms.
(C) Land that has been farmed for many years has usually been subjected to overfertilization.
(D) The soil that was taken from the land that had been out of production was lacking in fungi and other beneficial organisms.
(E) The soil that was taken from the land that had been out of production contained harmful organisms that attack plant roots.

4. Based on the passage, which one of the following is most likely to be true of any soil used to replace topsoil in the process mentioned in the first paragraph?

(A) Thistles cannot grow in it.
(B) It does not contain significant amounts of fungi.
(C) It contains very few seeds of native grasses and herbs.
(D) It does not contain large amounts of fertilizer.
(E) It was never used for growing corn or other commercial crops.

5. The author’s reference to the belief that “damaged ecological systems will restore themselves very gradually over time” (Highlighted) primarily serves to

(A) introduce a long-held belief that the Netherlands study is attempting to discredit
(B) cite the justification generally used by people favoring intense agricultural production
(C) suggest that the consequences of agricultural overproduction are not as dire as people generally believe
(D) present the most common perception of why agricultural overproduction is problematic
(E) describe the circumstances surrounding and motivating the Netherlands study

6. In which one of the following circumstances would it be LEAST advantageous to use the methods researched in the Netherlands study in order to restore to its natural state a field that has been in constant agricultural use?

(A) The field’s natural nutrients have been depleted through overproduction.
(B) The field’s topsoil can easily be removed and replaced.
(C) The field has been heavily fertilized for many decades.
(D) The field has the potential to support commercial grass plants such as rye.
(E) The field is adjacent to other fields where corn is growing and will continue to be grown.

7. It can be inferred from the passage that if the disease organisms mentioned in highlighted text were eliminated in a plot of land that had been in constant agricultural use, which one of the following would be the most likely to occur?

(A) Populations of symbiotic mycorrhiza that live in the soil would initially decline.
(B) Unwanted plant species like thistles would be unable to survive.
(C) The chance of survival of a beneficial native plant would increase.
(D) The number of all types of beneficial microorganisms would increase in the long term.
(E) Populations of other types of disease organisms would increase proportionally.

8. Which one of the following is most analogous to the process, described in the last paragraph, by which the spread of thistles can be curtailed?

(A) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials encouraging that party’s supporters to switch their allegiance and vote for candidates from a rival party.
(B) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials defending candidates from a rival party against attacks by certain broadcast journalists.
(C) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials intended to discourage supporters of Party A from voting in the upcoming election.
(D) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials attacking certain public figures who support candidates from Party A.
(E) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials intended to create antagonism between two factions within that party.

• Source: LSAT Official PrepTest 65 (December 2011)
• Difficulty Level: 700

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Originally posted by patto on 08 Feb 2019, 05:58.
Last edited by SajjadAhmad on 09 Sep 2019, 23:45, edited 3 times in total.
Updated
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Re: As part of an international effort to address environmental problems  [#permalink]

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16 Mar 2019, 07:40
1
Can some one please explain Q 7 and Q8 . Why is option D incorrect in 7 and I didn't understand Q8 at all.Please help
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18 Mar 2019, 14:24
Why in question number 4 the correct answer is D, I have picked C.
Can someone explain to me why answer E on question number 5 is the correct?
About the last question, could you explain to me the analogy of the answer?
Thanks
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21 Mar 2019, 01:08
RaquelR1409 wrote:
Why in question number 4 the correct answer is D, I have picked C.
Can someone explain to me why answer E on question number 5 is the correct?
About the last question, could you explain to me the analogy of the answer?
Thanks

The reason for replacing topsoil is to get rid of the heavily fertilized soil as mentioned in the first para. Hence, the topsoil would lack fertilizers.
Hence D
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21 Mar 2019, 01:12
RaquelR1409 wrote:
Why in question number 4 the correct answer is D, I have picked C.
Can someone explain to me why answer E on question number 5 is the correct?
About the last question, could you explain to me the analogy of the answer?
Thanks

In Q5, you can directly eliminate B,C,D as they do not address the question. Between A and E, E is a better option since A says that Netherland study 'discredits' the given argument. The study doesn't discredit but gives an alternative to speed up the process. It agrees that a lot of time is taken and hence comes up with an alternative
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21 Mar 2019, 01:32
Why can't C be the answer for Q2?
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09 Jul 2019, 09:26
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+1 Kudos to posts containing answer explanation of all questions
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09 Jul 2019, 12:40
Can someone please explain Q6? I got confused because the passage says that while it might be easy to remove and replace topsoil, it is impractical to do so on a large scale and then it mentions the study. So for option (B)"The field’s topsoil can easily be removed and replaced" i thought that it might be easy but its not practical right so how can the study be Least advantageous? Also,in Q3 why is D wrong?
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13 Jul 2019, 07:58
I got question 8 correct in nearly 3 minutes by using POE.
I would like to explain my POE for Question 8 as many are facing issues with this question and i could not see any OE
Here we are looking for a strategy that can eliminate thistles. The passage does not explicitly state how this can be done.. but instead provides us some clues, such as by protecting other things that may prevent the growth of thistles.
Now in the question the party A becomes the thistles.Newspaper describes the force doing the action. The action is what we need to correlate with the one in presented in the passage to prevent thistles.
A: Easy to eliminate. It talks about some kind of role/position shift.
B: Could not really eliminate this option. the passage does talk about purposefully sowing beneficial organisms etc etc and protecting them
C: This option could be true had the passage talked about means to discourage the growth of thistles
D: This option could be true had the passage talked about means to discourage growth of other elements that promote the growth of thistles.
E: I could not really make sense of this option. The passage doesn't really talk about any fight between thistles and non thistles.

hence choose B. I myself was myself not too sure of the reasoning though.
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14 Jul 2019, 22:20
1
Explanation

3. The passage offers which one of the following as an explanation for why native plant varieties grew better when sown on land that had been out of production for 20 years than when sown on the plots enriched with soil taken from that land?

Difficulty Level: 700

Explanation

The correct answer choice is (B)

This choice requires a specific piece of information: the author’s explanation, presented beginning on line 35, for why native species of plants grew better when growing naturally on nearby land then when growing in plots enriched from soil nearby. Researchers, the author provides, concluded that this was attributable to the fact that overfarmed lands are overrun with aggressive disease organisms while lacking beneficial microorganisms.

Answer choice (A): The issue is not a lack in key nutrients, so this choice can be eliminated from contention.

Answer choice (B): This is the correct answer choice. As discussed, the researchers concluded that such land is usually overrun with aggressive disease organisms.

Answer choice (C): Overfertilization is not the issue that is presented to explain the results specified in the question.

Answer choice (D): This clever choice was popular among test takers; overfarmed land is overrun with disease and lacking beneficial microorganisms. The soil that was taken from the out-ofproduction land may have had some such microorganisms, although the plots to which the soil was taken may have been lacking.

Answer choice (E): The harmful organisms were concluded to be present in the overfarmed land, not in the land that had been taken out of production.

Explanation credit: PowerScore

6. In which one of the following circumstances would it be LEAST advantageous to use the methods researched in the Netherlands study in order to restore to its natural state a field that has been in constant agricultural use?

Difficulty Level: 700

Explanation

The correct answer choice is (B)

This question asks for the circumstances in which it would be LEAST advantageous to use the methods researched in the Netherlands study. This means that the four incorrect answer choices will provide circumstances under which the Netherlands study methods would be beneficial, and the correct answer choice will be the only exception.

Answer choice (A): The research in the Netherlands dealt with over-farmed land, so in this circumstance the methods researched would be beneficial.

Answer choice (B): This is the correct answer choice. If the topsoil can easily be removed and replaced, then taking that approach would be the quickest way, according to the first paragraph of the passage.

Answer choice (C): One of the issues with over-farmed land is over-fertilization, an issue with the former cornfield studied in the Netherlands, so the methods researched in that study would be likely to be beneficial in this circumstance.

Answer choice (D): The planting of various grass and herb species is one of the methods researched in the study, so this choice presents a circumstance under which the use of such methods would be likely to be beneficial, so this is one of the incorrect answers to this Must be True EXCEPT question.

Answer choice (E): The passage provides no reason to believe that under such circumstance the Netherlands research methods would not be advantageous, so this choice should be ruled out of contention.

Explanation credit: PowerScore

Hope it helps

Can someone please explain Q6? I got confused because the passage says that while it might be easy to remove and replace topsoil, it is impractical to do so on a large scale and then it mentions the study. So for option (B)"The field’s topsoil can easily be removed and replaced" i thought that it might be easy but its not practical right so how can the study be Least advantageous? Also,in Q3 why is D wrong?

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14 Jul 2019, 23:38
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15 Jul 2019, 04:10
1
1
Explanation

7. It can be inferred from the passage that if the disease organisms mentioned in line 48 were eliminated in a plot of land that had been in constant agricultural use, which one of the following would be the most likely to occur?

Difficulty Level: 700

Explanation

The correct answer choice is (C)

This question asks for the likely outcome if the aggressive disease organisms discussed on line 39 were eliminated from land that had been in constant agricultural use. Such disease, researchers concluded, were the reason that seeds in overfarmed plots did not do as well as those growing in land that had been out of production for two decades. Presumably, if such disease were to be eliminated, the seeds would do better, perhaps as well as those growing naturally nearby.

Answer choice (A): There is no basis to conclude that beneficial microorganisms would decline if the disease organisms were eliminated.

Answer choice (B): The elimination of the disease organisms would not render unwanted species unable to survive, so this is not the right answer choice.

Answer choice (C): This is the correct answer choice. As discussed, such seeds would likely do better if the harmful aggressive disease organisms could be eliminated; the native plant would have a better chance of survival.

Answer choice (D): Nothing in the passage suggests that the elimination of disease organisms in over-farmed land would result in a long-term increase in the number of beneficial microorganisms.

Answer choice (E): The author does not suggest that eliminating disease microorganisms would be likely to result in proportional increases in the population of other disease organisms, so this cannot be the right answer to this Must Be True question.

Explanation credit: PowerScore

8. Which one of the following is most analogous to the process, described in the last paragraph, by which the spread of thistles can be curtailed?

Difficulty Level: 750

Explanation

The correct answer choice is (B)

This question asks for the process most analogous to the thistle-curtailing process described in the last paragraph; a mix of native grass and herb species added to plots appeared to force out the thistles.

Answer choice (A): This choice lacks the concept of bringing in something to keep something else out, so it does not parallel the process described in the last paragraph.

Answer choice (B): This is the correct answer choice. Like the native species supported to force out the thistles in the Netherlands study, this choice describes the approach of supporting rival candidates to take over the local area and keep Party A’s representation from proliferating.

Answer choice (C): This choice does not parallel the process referenced in the passage, which brings in some species to force out others.

Answer choice (D): This choice describes a more direct attack on supporters of passage A, but does not include the concept of bringing in certain species to crowd out others, so this answer fails to parallel the process described in the third paragraph and should be ruled out of contention.

Answer choice (E): This choice deals with creation of antagonism between the parties, but it does not parallel the process outlines in the third paragraph, in which thistles appeared to have been crowded out of plots where diverse native species of grass and herbs were introduced.

Explanation credit: PowerScore

Hope it helps

Shubhangana wrote:

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09 Sep 2019, 07:49
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Explanation

[
8. Which one of the following is most analogous to the process, described in the last paragraph, by which the spread of thistles can be curtailed?

Difficulty Level: 750

Explanation

The correct answer choice is (B)

This question asks for the process most analogous to the thistle-curtailing process described in the last paragraph; a mix of native grass and herb species added to plots appeared to force out the thistles.

Answer choice (A): This choice lacks the concept of bringing in something to keep something else out, so it does not parallel the process described in the last paragraph.

Answer choice (B): This is the correct answer choice. Like the native species supported to force out the thistles in the Netherlands study, this choice describes the approach of supporting rival candidates to take over the local area and keep Party A’s representation from proliferating.

Answer choice (C): This choice does not parallel the process referenced in the passage, which brings in some species to force out others.

Answer choice (D): This choice describes a more direct attack on supporters of passage A, but does not include the concept of bringing in certain species to crowd out others, so this answer fails to parallel the process described in the third paragraph and should be ruled out of contention.

Answer choice (E): This choice deals with creation of antagonism between the parties, but it does not parallel the process outlines in the third paragraph, in which thistles appeared to have been crowded out of plots where diverse native species of grass and herbs were introduced.

Explanation credit: PowerScore

Hope it helps

I'd like to disagree on the above explanation.

Quote:
This question asks for the process most analogous to the thistle-curtailing process described in the last paragraph; a mix of native grass and herb species added to plots appeared to force out the thistles.

The 2nd para deals with native grass and herb species. The last paragraph deals with beneficial organisms & aggressive disease organisms. The question specifically asks about last paragraph. Hence, I disagree.

My explanation for (B) would be,

Party A winning= Thistles out growing native plants
Defending Candidates = mycorrhiza (Fungi that fight against disease organisms)
Publishing editorials = introducing nematodes, fungi, and other beneficial microorganisms
attacks by certain broadcast journalists = Disease organisms.
Finally, newspaper = Humans doing the study.

(B)A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials defending candidates from a rival party against attacks by certain broadcast journalists.

Substituting the above equivalents,

Humans doing the study work to prevent the outgrowth of thistles and aide growth of native plants by introducing beneficial micro-organisms from unfarmed land to help Mycorrhiza(Other Benefical Micro-Organisms that are fewer in number) against attack by Diesease organisms.

Only (B) suits well with the idea present in last paragraph.
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09 Sep 2019, 12:21
Hey jkbk1732 , I appreciate the effort, but there's a mistake in the Question. It refers to Thistles in the Last Paragraph instead of the Second Paragraph.
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09 Sep 2019, 23:49
Hello sharathnair14

You didn't have mentioned the question # you are referring to but i am supposing that you are talking about q#8, i have tally it with Official LSAT Source and i found no discrepancy.

Thanks.

sharathnair14 wrote:
Hey jkbk1732 , I appreciate the effort, but there's a mistake in the Question. It refers to Thistles in the Last Paragraph instead of the Second Paragraph.

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21 Sep 2019, 00:56
2
Hi everyone,
Took 18 minutes and got 5/8 correct. Took 4:50 minutes to read, write down paragraphs summaries and main point.

-----------------------------------------------------------------------------------------------------

P1
This paragraphs talk about the plan of taking out of production thousands of acres of land to reestablish a natural balance of flora. The root cause of the problem was the over production that led to the depletion of nutrients, which in turn led to the expansion of thistles, organisms that attack plants.
There are different solutions to the problem:
#1: the most effective solution is to replace the top soil but this is unfeasible because the land is too vast
#2: leave the acres of soil alone and wait
In addition a study from the Netherlands is promising

P2
Paragraphs 2 talks in detail about the study.
The outcome of the study is that out of all the plots analyzed the plots with the greater variety of species sown made the thistles disappear while the plots left untouched saw the thistles became dominant.
Seems that this study can be applied to the current problem to fasten the reestablishment of the flora...

P3
Paragraphs 3 talks about another experiment made. Soil from lands left untouched for 20 years (soil A) was put into plots of soil that was affected by overproduction(soil B). (soilA+ soil B= soil C)
The soil A used was characterized by the presence of beneficial organisms that developed over the time the soil was left untouched.
The mixed soil C fared better that the unenriched soil B but it did not fare as much as the soil A.
The reason is that in soil B there are damaging microorganisms.
The outcome of the experiment is that reestablishment of flora can be achieved by enriching soil B with beneficial microorganisms.

MP
To discuss methods to reestablish natural flora in soils affected by overproduction

-----------------------------------------------------------------------------------------------------

1. Which one of the following most accurately expresses the central idea of the passage?

Pre-thinking:
Main point question
Refer to main point above

(A) The rehabilitation of land damaged by agricultural overproduction can be accelerated by means of a two-pronged strategy aimed at restoring biological diversity.
In line with pre-thinking. Hence correct

(B) Restoring plant diversity to overused farmland requires many years and considerable effort.
Not in line with pre-thinking. Hence incorrect

(C) The damaging effects of long-term agricultural overproduction argue for the modification of current agricultural practices.
Not in line with pre-thinking. Hence incorrect

(D) Soil on farmland damaged by overproduction will gradually replenish and restore itself over time if left untouched.
Not in line with pre-thinking. Hence incorrect

(E) Agricultural overproduction tends to encourage the proliferation of disease organisms in the soil as well as problem weeds.
Not in line with pre-thinking. Hence incorrect

-----------------------------------------------------------------------------------------------------

2. Which one of the following most accurately describes the organization of the passage?

Pre-thinking:
Structure question

A problem is presented and its implications detailed--> one study and one experiment are presented as solutions to the problem

(A) A study is described, the results of the study are scrutinized, and the results are judged to be inconclusive but promising.
Not in line with pre-thinking. Hence incorrect

(B) A hypothesis is presented, evidence both supporting and undermining the hypothesis is given, and a modification of the hypothesis is argued for.
Not in line with pre-thinking.Plus no hypothesis. Hence incorrect

(C) A study is evaluated, a plan of action based on the study’s findings is suggested, and conclusions are drawn concerning the likely effectiveness of the plan.
No evaluation. [b]Not in line with pre-thinking. Hence incorrect[/b]

(D) A goal is stated, studies are discussed that argue for modifying the goal’s objectives, and a methodology is detailed to achieve the revised goal.
no goal but problem. [b]Not in line with pre-thinking. Hence incorrect[/b]

(E) A problem is presented, a study addressing the problem is described, and a course of action based on the study’s findings is given.
In line with pre-thinking. Hence correct

-----------------------------------------------------------------------------------------------------

3. The passage offers which one of the following as an explanation for why native plant varieties grew better when sown on land that had been out of production for 20 years than when sown on the plots enriched with soil taken from that land?

Pre-thinking:

Detail question

The presence of microorganisms such as fungi were beneficial to the other soil (look above the 3rd paragraph summary for a more detailed explanation)
while the soil affected by overproduction contained damaging microorganisms

(A) Land that has been farmed for many years lacks certain key nutrients.
Not in line with pre-thinking. Hence incorrect

(B) Land that has been farmed for many years is usually overrun with harmful and aggressive organisms.
in line with pre-thinking. Hence correct

(C) Land that has been farmed for many years has usually been subjected to overfertilization.
Not in line with pre-thinking. Hence incorrect

(D) The soil that was taken from the land that had been out of production was lacking in fungi and other beneficial organisms.
Not in line with pre-thinking. Hence incorrect

(E) The soil that was taken from the land that had been out of production contained harmful organisms that attack plant roots.
Not in line with pre-thinking. Hence incorrect

-----------------------------------------------------------------------------------------------------

4. Based on the passage, which one of the following is most likely to be true of any soil used to replace topsoil in the process mentioned in the first paragraph?

Pre-thinking:
Inference question
It should not contain harmful substances in it

(A) Thistles cannot grow in it.
Not a strict requirement. Hence incorrect

(B) It does not contain significant amounts of fungi.
It should actually . Hence incorrect

(C) It contains very few seeds of native grasses and herbs.
Not necessarily. Hence incorrect

(D) It does not contain large amounts of fertilizer.
Fertilizers used in huge amounts contributed to the depletion of nutrients in the soil. It makes logical sense not to use it anymore. Hence correct

(E) It was never used for growing corn or other commercial crops.
Not necessarily. Hence incorrect

-----------------------------------------------------------------------------------------------------

5. The author’s reference to the belief that “damaged ecological systems will restore themselves very gradually over time” (Highlighted) primarily serves to

Pre-thinking:
Purpose question
Pay attention to the word very. It suggests that the process will take a long time, maybe too much than people are willing to wait. Right after the author talks about a study that will speed up the process. So maybe the unwillingness to wait is the driver of the study aimed at speeding the process up

(A) introduce a long-held belief that the Netherlands study is attempting to discredit
Not in line with pre-thinking. Hence incorrect

(B) cite the justification generally used by people favoring intense agricultural production
Not in line with pre-thinking. Hence incorrect

(C) suggest that the consequences of agricultural overproduction are not as dire as people generally believe
Not in line with pre-thinking. Hence incorrect

(D) present the most common perception of why agricultural overproduction is problematic
Not in line with pre-thinking. Hence incorrect

(E) describe the circumstances surrounding and motivating the Netherlands study
In line with pre-thinking. Hence correct

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6. In which one of the following circumstances would it be LEAST advantageous to use the methods researched in the Netherlands study in order to restore to its natural state a field that has been in constant agricultural use?

Pre-thinking:
The study aims at finding a fast method to reestablish the flora. But what if replacing the topsoil is faster than this method?

(A) The field’s natural nutrients have been depleted through overproduction.
Not in line with pre-thinking. Hence incorrect

(B) The field’s topsoil can easily be removed and replaced.
In line with pre-thinking. Hence correct

(C) The field has been heavily fertilized for many decades.
Not in line with pre-thinking. Hence incorrect

(D) The field has the potential to support commercial grass plants such as rye.
Not in line with pre-thinking. Hence incorrect

(E) The field is adjacent to other fields where corn is growing and will continue to be grown.
Not in line with pre-thinking. Hence incorrect

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7. It can be inferred from the passage that if the disease organisms mentioned in highlighted text were eliminated in a plot of land that had been in constant agricultural use, which one of the following would be the most likely to occur?

Pre-thinking:

Inference question
No damaging microorganisms= less risk for the plants

(A) Populations of symbiotic mycorrhiza that live in the soil would initially decline.
Not in line with pre-thinking. Hence incorrect

(B) Unwanted plant species like thistles would be unable to survive.
Not in line with pre-thinking. Hence incorrect

(C) The chance of survival of a beneficial native plant would increase.
In line with pre-thinking. Hence correct

(D) The number of all types of beneficial microorganisms would increase in the long term.
Not in line with pre-thinking. Hence incorrect

(E) Populations of other types of disease organisms would increase proportionally.
Not in line with pre-thinking. Hence incorrect

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8. Which one of the following is most analogous to the process, described in the last paragraph, by which the spread of thistles can be curtailed?

Pre-thinking:
analogous statement question
The process: adding fungi-> decrease in the harmful effect of damaging microorganisms that want to attack plants

(A) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials encouraging that party’s supporters to
switch their allegiance and vote for candidates from a rival party.
Not analogus.

(B) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials defending candidates from a rival party against attacks by certain broadcast journalists.
Party A=damaging MO. Editorials=fungi. fungi defend from D MO. Correct

(C) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials intended to discourage supporters of Party A from voting in the upcoming election.
Not analogous

(D) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials attacking certain public figures who support candidates from Party A.
Not analogous

(E) A newspaper works to prevent Party A from winning a majority of seats in the legislature by publishing editorials intended to create antagonism between two factions within that party.
Not analogous.

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Manager
Status: Climbing the GMAT mountain
Joined: 11 Feb 2018
Posts: 62
Location: Germany
Concentration: Technology, Strategy

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17 Feb 2020, 02:28
patto wrote:
[...]Researchers have concluded that this is because fields farmed for many years are overrun with aggressive disease organisms, while, for example, beneficial mycorrhiza— fungi that live symbiotically on plant roots and strengthen them against the effects of disease organisms—are lacking.[...]

7. It can be inferred from the passage that if the disease organisms mentioned in highlighted text were eliminated in a plot of land that had been in constant agricultural use, which one of the following would be the most likely to occur?

(A) Populations of symbiotic mycorrhiza that live in the soil would initially decline.
(B) Unwanted plant species like thistles would be unable to survive.
(C) The chance of survival of a beneficial native plant would increase.
(D) The number of all types of beneficial microorganisms would increase in the long term.
(E) Populations of other types of disease organisms would increase proportionally.

Hey patto, i guess the highlighted part should be the aggressive disease organisms, not the beneficial mycorrhiza— fungi.
Am i right? Because the OA only makes sense then. If it were the mycorrhiza that would be removed, C) would be the total opposite.
As part of an international effort to address environmental problems   [#permalink] 17 Feb 2020, 02:28
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