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

It is currently 21 Oct 2014, 00:50

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

Q40: Two centuries ago, Tufe Peninsula became separated form

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Manager
Manager
avatar
Joined: 11 Jan 2007
Posts: 204
Location: Bangkok
Followers: 1

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

Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 09 Jun 2007, 19:50
1
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

81% (02:46) correct 19% (01:15) wrong based on 8 sessions
Q40:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.
_________________

cool

Senior Manager
Senior Manager
User avatar
Joined: 28 Feb 2007
Posts: 308
Followers: 1

Kudos [?]: 28 [0], given: 0

 [#permalink] New post 09 Jun 2007, 20:37
vote for C.
Manager
Manager
avatar
Joined: 30 May 2007
Posts: 56
Followers: 1

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

Re: cr assumption [#permalink] New post 09 Jun 2007, 20:51
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions. out of scope
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today. irrelvent
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago. weakening the argument
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment. irrelevant
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.strenthening the conclusion so correct answer for me
Manager
Manager
User avatar
Joined: 04 Jun 2003
Posts: 63
Followers: 1

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

 [#permalink] New post 09 Jun 2007, 21:08
D.
Manager
Manager
avatar
Joined: 23 Dec 2006
Posts: 136
Followers: 1

Kudos [?]: 8 [0], given: 0

 [#permalink] New post 09 Jun 2007, 21:51
I'm going with C.
Senior Manager
Senior Manager
User avatar
Joined: 14 Mar 2007
Posts: 319
Location: Hungary
Followers: 1

Kudos [?]: 16 [0], given: 3

My answer [#permalink] New post 09 Jun 2007, 23:20
At first glance I liked E but I think it is not correct because the author uses the word "partially" in his conclusion. So, I vote for D.

OA?
Senior Manager
Senior Manager
User avatar
Joined: 27 Mar 2007
Posts: 329
Followers: 1

Kudos [?]: 21 [0], given: 0

Re: cr assumption [#permalink] New post 10 Jun 2007, 05:14
conclusion: changes are attributable to Turfe's environmental changes

evidence1: sunflower 40cm shorter than on the mainland
evidence": Tufe Island is dryer than mainland was 200 years ago

assumption: only the island's climate has changed

A. irrelevant
B. irrelevant
C. The mainland’s environment has not changed, best answer
D. argument is about climate and not nutrients
E. can not be assumed
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 782
Followers: 2

Kudos [?]: 56 [0], given: 0

 [#permalink] New post 10 Jun 2007, 07:06
I would go for 'C'.
This mentions the assumption that the height of the sunflowers at main island is NOT changed.
To compare the hight of the flowers from the both parts, we should make sure that the height of flowers on the mainland is NOT changed.
VP
VP
User avatar
Joined: 22 Oct 2006
Posts: 1443
Schools: Chicago Booth '11
Followers: 7

Kudos [?]: 150 [0], given: 12

 [#permalink] New post 10 Jun 2007, 09:15
im with C as well, when answering an assumption question, talking about things outside the scope of the question will be irrelevant. i.e. ( soil nutrients )
Manager
Manager
avatar
Joined: 11 Jan 2007
Posts: 204
Location: Bangkok
Followers: 1

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

cr assumption [#permalink] New post 10 Jun 2007, 17:42
The best answer is C

Thanks.
_________________

cool

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5095
Location: Singapore
Followers: 19

Kudos [?]: 153 [0], given: 0

 [#permalink] New post 10 Jun 2007, 22:11
I'll go for C. It tells us temperature should be the only critical factor here, and the control case (sunflowers on mainland) is a fair comparison.
Director
Director
User avatar
Joined: 29 Aug 2005
Posts: 503
Followers: 2

Kudos [?]: 6 [0], given: 0

 [#permalink] New post 11 Jun 2007, 02:05
Facts
-Two centuries ago, Tufe Peninsula became separated form the mainland isolating on the newly formed Tufe Island a population of Turfil sunflowers
-This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland
-Tufe Island is significantly drier than Tufe Peninsula was
Conclusion
- So the current average height of Tufe’s Turfil sunflower is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions

Now let's look at the options
A - Eliminate - Out of scope.
B - Eliminate - Out of scope.
D - Eliminate - More of a fact than an assumption.
E - Eliminate - More of a fact than an assumption.

C - Correct - Is an assumption - It says that the mainland’s environment has not changed so there is no change in the height of the Turfil sunflowers on the mainland. Hence the difference in the height is only due to the change in the island's environment.

This goes with the conclusion.

Hence C should be the answer.
SVP
SVP
User avatar
Joined: 01 Oct 2013
Posts: 2288
Followers: 276

Kudos [?]: 66 [0], given: 0

Premium Member
Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 01 May 2014, 17:37
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Manager
Manager
avatar
Joined: 24 Jun 2013
Posts: 61
Followers: 0

Kudos [?]: 2 [0], given: 11

Reviews Badge
Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 15 May 2014, 07:42
Hi EGMAT,

im not able to eliminate the option D. As its says after negation that Soils has a nutrient which help flower to grow tall.

and we are taking about the whether environment has played a role in the decrease in the height of the flower.

So we have to just concentrate only on environment.

Can you guide me whether my reasoning is correct.

Thanks
Expert Post
2 KUDOS received
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1298

Kudos [?]: 3662 [2] , given: 185

Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 18 May 2014, 22:51
2
This post received
KUDOS
Expert's post
Nitinaka19 wrote:
Hi EGMAT,

im not able to eliminate the option D. As its says after negation that Soils has a nutrient which help flower to grow tall.

and we are taking about the whether environment has played a role in the decrease in the height of the flower.

So we have to just concentrate only on environment.

Can you guide me whether my reasoning is correct.

Thanks


Hi Nitin,

Is soil the only component of environment which can impact plant growth?

What about temperature, humidity etc? These can also impact plant growth. Right?

Now, even if the soil does not lack such nutrients, one of these other factors (temperature, humidity) could still be responsible for the difference in the heights of the flowers.

In such a case, the conclusion does not break down.

Isn't it?

When you negate an assumption, the conclusion should break-down. Right?

So, your job should be to find a scenario in which the conclusion could still hold true. Only in case where you are not able to find such a scenario can you confidently say that the conclusion has actually broken down. In such a case, the option statement is an actual assumption.

Does it help?

Feel free to ask if you have any further questions :)

Thanks,
Chiranjeev
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Manager
Manager
avatar
Joined: 24 Jun 2013
Posts: 61
Followers: 0

Kudos [?]: 2 [0], given: 11

Reviews Badge
Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 19 May 2014, 01:22
Thanks Chiranjeev,

My Gaps are filling in .... Feeling GOOD. :)
Manager
Manager
User avatar
Joined: 31 May 2012
Posts: 166
Followers: 4

Kudos [?]: 68 [0], given: 69

CAT Tests
Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 01 Jun 2014, 23:40
Premises:

1. 2 century ago, TP separated from mainland to form 2 regions- 1)mainland 2)Island

2. Island is drier than peninsula

3. Height of flower is Island 40 cm shorter than that in Mainland

Conclusion:
Current average height of Tufe’sTurfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Questions 1:
Option C says, Mainland sunflowers didn't grew taller due to environmental changes. This make me infer that sunflowers in island grew shorter.
This inference doesn't help to explain why this happened? What is the root cause of 40 cm shortness in island flowers.
I tend to seek the cause behind shortness of Island sunflowers and option D gave relief. Option (C) doesn't add any more information. It just says, Mainland flower didn't grew taller.

When I am asked to find WHY B is shorter than A, Answer Choice says, A is not taller.

Expert insight will help.

Question 2:
I didn't encounter similar question before. Do we have any other OG question like this ?
Expert Post
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1298

Kudos [?]: 3662 [0], given: 185

Re: Q40: Two centuries ago, Tufe Peninsula became separated form [#permalink] New post 09 Jun 2014, 01:48
Expert's post
umeshpatil wrote:
Premises:

1. 2 century ago, TP separated from mainland to form 2 regions- 1)mainland 2)Island

2. Island is drier than peninsula

3. Height of flower is Island 40 cm shorter than that in Mainland

Conclusion:
Current average height of Tufe’sTurfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Questions 1:
Option C says, Mainland sunflowers didn't grew taller due to environmental changes. This make me infer that sunflowers in island grew shorter.
This inference doesn't help to explain why this happened? What is the root cause of 40 cm shortness in island flowers.
I tend to seek the cause behind shortness of Island sunflowers and option D gave relief. Option (C) doesn't add any more information. It just says, Mainland flower didn't grew taller.

When I am asked to find WHY B is shorter than A, Answer Choice says, A is not taller.

Expert insight will help.

Question 2:
I didn't encounter similar question before. Do we have any other OG question like this ?


Dear Umesh,

Thank you for your query. :)

After going through your analyses of choices C and D, I feel that you are not asking yourself the right questions in the pre-thinking phase. :(

Accordingly, let's see where you may be faltering in applying the process.

Right now we are given three things, as you have rightly pointed.
1. Separation of the peninsula from the mainland
2. Difference in the environmental conditions between the peninsula and the island
3. Difference in the height of the sunflowers found on the island and those found on the mainland

On the basis of the above three facts, the author concludes that the difference in the environmental conditions between the peninsula and the island is responsible at least to some extent for the current (shorter) average height of the sunflowers found on the island. Now, in the pre-thinking phase for assumptions, what do we focus on? We try to think of scenarios in which the conclusion may not hold, right? Accordingly, what if someone told you that the difference in the height is not because the island sunflowers are shorter than before but because the mainland sunflowers are taller than before because of the changes in the environmental conditions on the mainland? Would the author's conclusion still be valid? Would the author still be able to blame the difference in the environmental conditions between the peninsula and the island as the cause for the difference in the average height of the sunflowers found at the two different places? The answer is NO! Choice C rules out this possibility by negating a possible counter to the link drawn between the difference in the environmental conditions between the peninsula and the island, and the difference in the height of the sunflowers. Try to negate Choice C and see the effect it has on the conclusion.

As regards choice D, ask yourself whether it is a must be true statement for the conclusion to hold true? Chiranjeev has addressed a similar doubt above. Please do present your analysis in the light of that discussion and we'll take our discussion forward from there. :)

Regards,

Neeti.
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Re: Q40: Two centuries ago, Tufe Peninsula became separated form   [#permalink] 09 Jun 2014, 01:48
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic Nearly a century ago, biologists found that if they separated an inver Bunuel 0 10 Oct 2014, 07:38
2 Two separate Machines enigma123 7 05 Nov 2011, 12:23
10 Two centuries ago, Tufe Peninsula became separated form the sbsharma 12 20 Jul 2010, 06:36
7 Nearly a century ago, biologists found that if they separate amitjash 17 22 Jun 2010, 05:34
1 Two centuries ago, Tufe Peninsula became separated form the marcodonzelli 4 12 Jan 2008, 09:06
Display posts from previous: Sort by

Q40: Two centuries ago, Tufe Peninsula became separated form

  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®.