Find all School-related info fast with the new School-Specific MBA Forum

It is currently 18 Apr 2014, 22:59

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Over the last century, paleontologists have used small

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 20 Mar 2008
Posts: 457
Followers: 1

Kudos [?]: 54 [0], given: 5

GMAT Tests User
Over the last century, paleontologists have used small [#permalink] New post 11 Aug 2009, 18:49
00:00
A
B
C
D
E

Difficulty:

  55% (medium)

Question Stats:

44% (02:47) correct 55% (02:02) wrong based on 139 sessions
Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.

Which of the following, if true, would enable the conclusion of the argument to be properly drawn?

(A) Not every species that lived in a given area is preserved as a fossil.
(B) At least one individual of every true species of triceratops has been discovered as a fossil specimen.
(C) No geographical area ever supports more than three similar species at the same time.
(D) In many species, individuals display quite marked variation.
(E) Differences between fossil specimens of triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.

I choose
[Reveal] Spoiler:
E
But it is not the OA.
[Reveal] Spoiler: OA

Last edited by dentobizz on 04 Nov 2013, 01:39, edited 1 time in total.
editing for the CR project
Director
Director
User avatar
Joined: 25 Oct 2008
Posts: 612
Location: Kolkata,India
Followers: 8

Kudos [?]: 117 [0], given: 100

GMAT Tests User
Re: ETS Paper test#42 CR#15 [#permalink] New post 11 Aug 2009, 19:50
OUCH!Even I answered E :( Could anybody explain?
_________________

countdown-beginshas-ended-85483-40.html#p649902

Intern
Intern
Joined: 04 Aug 2009
Posts: 11
Followers: 0

Kudos [?]: 3 [0], given: 4

Re: ETS Paper test#42 CR#15 [#permalink] New post 11 Aug 2009, 20:19
Jivana wrote:
Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.

Which of the following, if true, would enable the conclusion of the argument to be properly drawn?

(A) Not every species that lived in a given area is preserved as a fossil.
(B) At least one individual of every true species of triceratops has been discovered as a fossil specimen.
(C) No geographical area ever supports more than three similar species at the same time.
(D) In many species, individuals display quite marked variation.

(E) Differences between fossil specimens of triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.

[Reveal] Spoiler:
Chose E, OA is C


The conclusion of the argument is "This classification is unjustified". Therefore, E is wrong because E weakens the conclusion.
Manager
Manager
Joined: 11 Aug 2009
Posts: 129
Followers: 1

Kudos [?]: 14 [0], given: 3

GMAT Tests User
Re: ETS Paper test#42 CR#15 [#permalink] New post 21 Aug 2009, 12:11
seems like D. What is OA?
1 KUDOS received
Senior Manager
Senior Manager
Joined: 29 Jul 2009
Posts: 316
Followers: 4

Kudos [?]: 179 [1] , given: 9

GMAT Tests User
Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 22 Aug 2009, 00:59
1
This post received
KUDOS
Premise: paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species

Counter premise: however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time

Conclusion: the classification is unjustified.

Now we have to find a link between the counter premise and the conclusion. This link will allow the conclusion to be properly drawn


(A) Not every species that lived in a given area is preserved as a fossil.

This means that some species that lived in a given area are preserved as a fossil. This supports the paleontologists view

(B) At least one individual of every true species of triceratops has been discovered as a fossil specimen.

same as A

(C) No geographical area ever supports more than three similar species at the same time.

This restricts to three the number of species in a geographical area at the same time. Let's put both premises together to see if we can draw the conclusion

since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time and since no geographical area ever supports more than three similar species at the same time, we can conclude that it is impossible to classify triceratops into sixteen species.

This sounds correct

(D) In many species, individuals display quite marked variation.


(E) Differences between fossil specimens of triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.

This means that we should not distinguish between triceratops that came from the same are and triceratops that came from different areas. This supports the paleontologists view that we can use the differences in fossils to classify triceratops.
Intern
Intern
Joined: 14 Aug 2009
Posts: 36
Followers: 0

Kudos [?]: 4 [0], given: 1

Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 23 Aug 2009, 01:18
E says that the differences are less disticnt but still there are differences ...

C is right in saying that since max 3 species can survive, the eleven differentiations are not justified ...
_________________

Regards,
Saaquib

If you find any grammatical mistake in my post please don't hesitate in pointing out.

Please +1 if you find this post useful.

My Blog

Director
Director
User avatar
Joined: 25 Oct 2008
Posts: 612
Location: Kolkata,India
Followers: 8

Kudos [?]: 117 [0], given: 100

GMAT Tests User
Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 24 Aug 2009, 21:50
What is the reson for eliminating *(D)?
_________________

countdown-beginshas-ended-85483-40.html#p649902

Manager
Manager
Joined: 15 Mar 2008
Posts: 51
Followers: 1

Kudos [?]: 11 [0], given: 0

Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 28 Aug 2009, 07:21
C seems to be right because it clearly says that not more than 3 species can be found in the same geographic area. Therefore, the assertion of the author is correct that 11 species could not have come from the same area.
Director
Director
User avatar
Joined: 21 Dec 2010
Posts: 659
Followers: 10

Kudos [?]: 67 [0], given: 51

GMAT Tests User
Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 30 Apr 2011, 02:02
'The conclusion of the argument is "This classification is unjustified". Therefore, E is wrong because E weakens the conclusion.'

maximum explanation in minimum words.
_________________

What is of supreme importance in war is to attack the enemy's strategy.

1 KUDOS received
Verbal Forum Moderator
Verbal Forum Moderator
Joined: 23 Jul 2010
Posts: 481
Followers: 34

Kudos [?]: 355 [1] , given: 237

Premium Member
Re: Over the last century, paleontologists have used small [#permalink] New post 04 Nov 2013, 01:59
1
This post received
KUDOS
Bumping for review and further discussion*.
New project from GMAT Club! Click here


_________________

How to CHOOSE your Business School
Thanks = Kudos. Kudos are appreciated

Rules for posting on the verbal forum
When you post a question Pls. Provide its source & TAG your questions
Avoid posting from unreliable sources such as 1000 series.

Intern
Intern
Joined: 28 Dec 2012
Posts: 8
Followers: 0

Kudos [?]: 1 [0], given: 3

Re: paleontologists - ETS Paper test#42 CR#15 [#permalink] New post 22 Nov 2013, 08:53
tejal777 wrote:
What is the reson for eliminating *(D)?


D says "In many species, individuals display quite marked variation."
Sure it might be true. But have a closer look at the option. It says MANY.

The triceratops might not be one of the many.

Option C correctly states that "No geographical area ever supports more than three similar species at the same time."
Hence it is not possible to have found 11 species of triceratops in the same area at the same time
Re: paleontologists - ETS Paper test#42 CR#15   [#permalink] 22 Nov 2013, 08:53
    Similar topics Author Replies Last post
Similar
Topics:
New posts Over the last century, Paleontologists have used small kok72 2 13 Oct 2004, 06:41
New posts Over the last century, paleontologists have used small Janice 2 29 Nov 2004, 12:59
Popular new posts Over the last century, paleontologists have used small sushom101 12 20 Oct 2005, 13:15
New posts Over the last century, paleontologists have used small joemama142000 4 04 Dec 2005, 20:09
New posts Over the last century, paleontologists have used small razrulz 8 09 Feb 2006, 22:30
Display posts from previous: Sort by

Over the last century, paleontologists have used small

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.