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

It is currently 25 Apr 2019, 07:31

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Scientists have made genetic modifications to cotton to increase its

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

Hide Tags

 
Director
Director
User avatar
G
Joined: 23 Jan 2013
Posts: 549
Schools: Cambridge'16
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 15 Aug 2016, 22:00
Assumption: No way how new seed can be beneficial economically

A,B,C is out of scope

D correctly touches assumption by asking the area of new seed used. If area is wide even little difference in insecticide per acre needed becomes valuable

E is out. Can use two-path test, positive and negative answers do not strenghten/weaken the argument
Intern
Intern
avatar
Joined: 16 Oct 2012
Posts: 1
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 18 Aug 2016, 08:17
OG 2016 has different version of this question.
Intern
Intern
avatar
Joined: 13 Jul 2016
Posts: 36
GMAT 1: 770 Q50 V44
GMAT ToolKit User
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 31 Oct 2016, 03:48
vageesh wrote:
Scientists have made genetic modifications to cotton to increase its resistance to insect
pests. According to farmers’ reports, the amount of insecticide needed per acre to control
insect pests was only slightly lower for those who tried the modified seed than for those
who did not. Therefore, since the modified seed costs more than ordinary seed without
producing yields of higher market value, switching to the modified seed would be
unlikely to benefit most cotton farmers economically.
Which of the following would it be most useful to know in order to evaluate the argument?

A. Whether farmers who tried the modified cotton seed had ever tried growing other
crops from genetically modified seed

B. Whether the insecticides typically used on ordinary cotton tend to be more
expensive than insecticides typically used on other crops

C. Whether for most farmers who grow cotton it is their primary crop

D. Whether the farmers who have tried the modified seed planted as many acres of
cotton, on average, as farmers using the ordinary seed did

E. Whether most of the farmers who tried the modified seed did so because they had
previously had to use exceptionally large quantities of insecticide
Answer


Good question,
A - Irrelevant
B - Irrelevant, we need comparision b/w GMO and non GMO cotton, not b/w cotton and non cotton
C - Irrelevant
D - Correct, the sample used to find the average pesticide usage for GMO cotton should be comparable to the sample used to find the average usage of pesticide in non GMO.
E - The reason why the used GMO cotton is not relevant.
Intern
Intern
avatar
B
Joined: 13 Sep 2015
Posts: 24
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 01 Nov 2016, 10:58
Official question is as follows:-
Question no. 86 (OG 2016)

Scientists have modified feed corn genetically, increasing its resistance to insect pests. Farmers who tried out the genetically modified corn last season applied less insecticide to their corn fields and still got yields comparable to those they would have gotten with ordinary corn. Ordinary corn seed, however, costs less, and what these farmers saved on insecticide rarely exceeded their extra costs for seed. Therefore, for most feed-corn farmers, switching to genetically modified seed would be unlikely to increase profits.

Which of the following would it be most useful to know in order to evaluate the argument?

(A) Whether there are insect pests that sometimes reduce feed-corn yields, but against which commonly used insecticides and the genetic modification are equally ineffective
(B) Whether the price that farmers receive for feed corn has remained steady over the past few years
(C) Whether the insecticides typically used on feed corn tend to be more expensive than insecticides typically used on other crops
(D) Whether most of the farmers who tried the genetically modified corn last season applied more insecticide than was actually necessary
(E) Whether, for most farmers who plant feed corn, it is their most profitable crop

correct answer is D
Intern
Intern
avatar
Joined: 13 Jul 2016
Posts: 36
GMAT 1: 770 Q50 V44
GMAT ToolKit User
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 01 Nov 2016, 11:04
sandeepb17 wrote:
Official question is as follows:-
Question no. 86 (OG 2016)

Scientists have modified feed corn genetically, increasing its resistance to insect pests. Farmers who tried out the genetically modified corn last season applied less insecticide to their corn fields and still got yields comparable to those they would have gotten with ordinary corn. Ordinary corn seed, however, costs less, and what these farmers saved on insecticide rarely exceeded their extra costs for seed. Therefore, for most feed-corn farmers, switching to genetically modified seed would be unlikely to increase profits.

Which of the following would it be most useful to know in order to evaluate the argument?

(A) Whether there are insect pests that sometimes reduce feed-corn yields, but against which commonly used insecticides and the genetic modification are equally ineffective
(B) Whether the price that farmers receive for feed corn has remained steady over the past few years
(C) Whether the insecticides typically used on feed corn tend to be more expensive than insecticides typically used on other crops
(D) Whether most of the farmers who tried the genetically modified corn last season applied more insecticide than was actually necessary
(E) Whether, for most farmers who plant feed corn, it is their most profitable crop

correct answer is D



We do see variations of the same question in the official material too.
Director
Director
User avatar
V
Joined: 06 Jan 2015
Posts: 628
Location: India
Concentration: Operations, Finance
GPA: 3.35
WE: Information Technology (Computer Software)
Premium Member
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 06 Apr 2017, 01:57
Hi Experts,

Can you please explain how to eliminate E?

Thanks and Regards
Nandish
_________________
आत्मनॊ मोक्षार्थम् जगद्धिताय च

Resource: GMATPrep RCs With Solution
GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2404
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 11 Apr 2017, 07:44
Top Contributor
1
NandishSS, are you referring to the original question at the very beginning of the thread, or the version from OG 2016 posted by sandeepb17?
_________________
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
Director
Director
User avatar
V
Joined: 06 Jan 2015
Posts: 628
Location: India
Concentration: Operations, Finance
GPA: 3.35
WE: Information Technology (Computer Software)
Premium Member
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 11 Apr 2017, 07:54
GMATNinja wrote:
NandishSS, are you referring to the original question at the very beginning of the thread, or the version from OG 2016 posted by sandeepb17?


Hi GMATNinja,

To the original question at the very beginning of the thread.
_________________
आत्मनॊ मोक्षार्थम् जगद्धिताय च

Resource: GMATPrep RCs With Solution
GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2404
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 11 Apr 2017, 08:18
2
Top Contributor
Ah -- now that I'm looking at it more closely, I think the original question at the beginning of the thread was botched somehow. It looks like somebody took the official GMAT version (posted above by sandeepb17), and tried to tweak it a little bit, but I really don't think that the correct answer is as clear as it should be. I'm skeptical that it's from an official source at all, to be honest.

And I looked through old editions of the OGs, and the version that sandeepb17 posted is in the 2016, 2015, 13th, and 12th editions. But nothing even vaguely similar is in the 11th or 10th editions, at least not that I could find. (And yes, I really do have copies of seven different OGs. My life is awesome!!)

So unless somebody can find where, exactly, the original question appeared in official GMAT materials, I wouldn't waste your time on that original question. But there's a lively discussion of the real version here: https://gmatclub.com/forum/scientists-h ... 09871.html
_________________
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
Intern
Intern
avatar
B
Joined: 18 Apr 2017
Posts: 1
Location: India
GMAT 1: 730 Q50 V40
GPA: 4
Reviews Badge
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 23 May 2017, 11:52
This question is paraphrased to an extent that it has lost its clarity as compared to the original question from OG 16. Hence it is creating this confusion.
Intern
Intern
avatar
B
Joined: 15 Feb 2017
Posts: 12
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 23 May 2017, 11:58
And. D.
As it is important to know about the farm land otherwise can't compare the yield and can't evaluate.

Sent from my vivo 1601 using GMAT Club Forum mobile app
Manager
Manager
avatar
B
Joined: 24 Jul 2016
Posts: 51
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 08 Jul 2017, 10:41
1
HanoiGMATtutor wrote:
I think the question has been removed from the Official Guide for a reason. Only 39% of people on this forum were able to find the supposedly correct answer.


do you think its a 760 level qn or higher? just asking out of curiosity .
Manager
Manager
avatar
S
Joined: 27 Aug 2014
Posts: 55
Location: Canada
Concentration: Strategy, Technology
GMAT 1: 660 Q45 V35
GPA: 3.66
WE: Consulting (Consulting)
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 12 Jul 2017, 22:34
Using Genetically Modified Cotton does not yield in general higher revenue than using Regular cotton because the savings on the pesticides isn't a lot + the seeds cost higher.

To make this comparison we need to know

1) How much more are the seeds than the regular seeds
2) We need an equal comparison between the revenue from GMO seeds and non GMO seeds.

Option D satisfied 2).
Manager
Manager
User avatar
S
Joined: 22 Nov 2016
Posts: 205
Location: United States
Concentration: Leadership, Strategy
GPA: 3.4
Reviews Badge
Re: Scientists have made genetic modifications to cotton to increase its  [#permalink]

Show Tags

New post 14 Jul 2017, 16:00
1
The correct answer is D

Generalize:
g-mod cotton - resists insects
farmers used-not much diff in quantity of insecticides-
switching makes little sense

Here we want to understand why the farmers said that the gap in insecticide usage was small. There are two possibilities.
1. They overused insecticide since this was the first yield
2. The g-mod insecticide and regular cotton insecticide were sprayed on two different size fields.
3. Cost difference - I doubt such an easy answer exists in the GMAT!

Lets see why D is correct by proving others incorrect:

A. Whether farmers who tried the modified cotton seed had ever tried growing other
crops from genetically modified seed - Ok. Lets assume that they have grown other crops. THis does not affect cotton's insecticide usage.

B. Whether the insecticides typically used on ordinary cotton tend to be more
expensive than insecticides typically used on other crops - Ok. Lets say that price of insecticide for ordinary cotton is more. This would have reduced the gap in cost savings even more.

C. Whether for most farmers who grow cotton it is their primary crop - Lets assume yes. Does this help in evaluating the cost? No

D. Whether the farmers who have tried the modified seed planted as many acres of
cotton, on average, as farmers using the ordinary seed did - Yes! If I took only one acre of regular cotton and my friend had 10 acres of g-mod cotton, obviously the cost of insecticide for me will be very less compared to his cost. If we both had 10 acres then we could easily evaluate the cost of insecticide and resolve the doubt

E. Whether most of the farmers who tried the modified seed did so because they had
previously had to use exceptionally large quantities of insecticide-Careful! Read the sentence correctly! 'Whether the farmers who tried the modified seed did so'...........
Did so? Did they try to plant seeds because they had used large quantities of insecticide? This sentence is very vague and compares planting seeds to using insecticide. Between D and E, E sounds smart but vague.

_________________
Kudosity killed the cat but your kudos can save it.
GMAT Club Bot
Re: Scientists have made genetic modifications to cotton to increase its   [#permalink] 14 Jul 2017, 16:00

Go to page   Previous    1   2   [ 34 posts ] 

Display posts from previous: Sort by

Scientists have made genetic modifications to cotton to increase its

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.