GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 18 Jun 2019, 08:06

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# GMATPREP ChallengeQ - More selective than most chemical pesticides in

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Intern
Joined: 31 Jul 2013
Posts: 15
Location: Viet Nam
Concentration: General Management, Entrepreneurship
GMAT 1: 650 Q49 V28
GPA: 3.46
WE: Sales (Computer Software)
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

07 Nov 2017, 00:29
pikolo2510 wrote:
4. The example presented by the author in highlight text most clearly serves to illustrate
A. a situation in which a species is less vulnerable to biocontrol agents than it would have been to chemical pesticides.
B. a way in which the introduction of a biocontrol agent can affect a nontarget species.
C. a nonnative agent's adapting in an unpredictable way that results in damage to a new host.
D. The contention that biocontrol agents can harm nontarget species by competing with them for resources
E. the way in which indirect consequences from the use of biocontrol agents are most likely to occurs.

In the above question Option B and E are close. Can anyone explain their POE?

I also hesitated those 2 options. Then I eliminated E because of the word "most likely". Any other ideas how to POE?
Thanks
GMAT Club Verbal Expert
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2561
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

17 Dec 2017, 22:50
1
wadepooja9 wrote:
Why is A wrong in Qs No 5?

Quote:
5. According to the passage, which of the following is a concern that arises with biocontrol agents but not with chemical pesticides?

(A) Biocontrol agents are likely to destroy desirable species as well as undesirable ones.

(B) Biocontrol agents are likely to have indirect as well as direct adverse effects on nontarget species.

(C) Biocontrol agents may change in unforeseen ways and thus be able to damage new hosts.

(D) Biocontrol agents may be ineffective in destroying targeted species.

(E) Biocontrol agents may be effective for only a short period of time.

They ask for a concern that arises with biocontrol agents but NOT with chemical pesticides. Refer to the first sentence of the passage: "More selective than most chemical pesticides in that they ordinarily destroy only unwanted species, biocontrol agents..." So biocontrol agents ordinarily destroy only unwanted species. This implies that chemical pesticides destroy both unwanted species and other wanted species.

Chemical pesticides are likely to destroy desirable species as well as undesirable ones, so choice (A) represents a concern for BOTH chemical pesticides and biocontrol agents. Thus, (A) should be eliminated.
_________________
GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for \$29.99 | Time management on verbal
Manager
Joined: 29 Jan 2015
Posts: 75
Location: India
Concentration: Marketing, Entrepreneurship
GPA: 3.7
WE: Information Technology (Internet and New Media)
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

06 Mar 2018, 00:51
Would anyone please explain the answer of question 6 ? ( want to know the POE of D )

I have selected D ( bcz in the passage it has been stated that 'a virus was introduced....')

Though A seemed also correct.
So confused to choose between D and A
Intern
Joined: 15 May 2017
Posts: 28
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

22 Jul 2018, 04:35
soumya170293 wrote:
Would anyone please explain the answer of question 6 ? ( want to know the POE of D )

I have selected D ( bcz in the passage it has been stated that 'a virus was introduced....')

Though A seemed also correct.
So confused to choose between D and A

soumya170293
Option D says - "The blue butterfly was infected by the virus that had been intended to control rabbit populations."
Here's the highlighted text -
Another example of indirect negative consequcnces occurred in England when a virus introduced to control rabbits reduced the amount of open ground (because large rabbit populations reduce the ground cover), in turn reducing underground ant nests and triggering the extinction of a blue butterfly that had depended on the nests to shelter its offspring
The passage does not mention that the BBF was ever infected by the Virus. All this text says is that there were some indirect consequences which impacted the BBF.
Virus introduced to reduce open ground --> Reduced ant tests --> BBF used nests for shelter --> No nests and BBF became extinct.

Essentially this was an unintended effect - you can eliminate D.
A is the only option which explains this indirectly dependency.

Hope this helps!
Manager
Status: On the journey of achieving
Affiliations: Senior Manager, CA by profession, CFA(USA) Level 2
Joined: 06 Feb 2016
Posts: 208
Location: India
Concentration: Finance, Finance
GMAT 1: 560 Q44 V21
GPA: 3.82
WE: Other (Commercial Banking)
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

14 Sep 2018, 18:41
Time taken 13 minutes, 4 Correct and 5 wrong
In Primary purpose question I was stuck in two answer choices A and D and marked the wrong one OptionD
_________________
Never Settle for something less than what you deserve...........

I've failed over and over and over again in my life and that is why I succeed--Michael Jordan
Kudos drives a person to better himself every single time. So Pls give it generously
Wont give up till i hit a 700+
Manager
Joined: 15 Aug 2016
Posts: 208
Location: India
Concentration: Technology, Operations
GMAT 1: 690 Q49 V35
GPA: 3.84
WE: Operations (Consulting)
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

02 Nov 2018, 06:51
7:46
4/6
Didi silly mistakes in the last 2 questions.
Could have taken some more time.
Lesson learnt.!!
What is the level of this passage?
Manager
Joined: 03 Dec 2018
Posts: 193
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

22 Mar 2019, 08:26
Why q6 Option B is wrong. "the extinction of a blue butterfly that had depended on the nests to shelter its offspring. " I didn't understand nests of what??
GMAT Club Verbal Expert
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2561
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in  [#permalink]

### Show Tags

09 Apr 2019, 09:24
mallya12 wrote:
Why q6 Option B is wrong. "the extinction of a blue butterfly that had depended on the nests to shelter its offspring. " I didn't understand nests of what??

The chain of events is a bit confusing on this one! Let's organize the information from the passage:

• A virus was introduced to control the rabbit population
• Large rabbit populations REDUCE ground cover (and "vegetation" is another word for "ground cover"). So, controlling the rabbit population INCREASED vegetation
• Increasing vegetation REDUCED underground ant nests
• The blue butterflies depended on underground ant nests to shelter their offspring. So, reducing the underground ant nests led to the extinction of the butterflies

Question #6 asks us what the passage suggests above the blue butterflies.

Here is answer choice (B):
Quote:
(B) The blue butterfly's survival was indirectly dependent on sustaining large amounts of vegetation in its habitat.

From the information above, we know that the exact opposite of answer choice (B) is true. The blue butterflies depended on underground ants nests, which depended on reduced vegetation. For this reason, answer choice (B) is out.

I hope that helps!
_________________
GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for \$29.99 | Time management on verbal
Re: GMATPREP ChallengeQ - More selective than most chemical pesticides in   [#permalink] 09 Apr 2019, 09:24

Go to page   Previous    1   2   [ 28 posts ]

Display posts from previous: Sort by

# GMATPREP ChallengeQ - More selective than most chemical pesticides in

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne