It is currently 19 Oct 2017, 15:12

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Networks of blood vessels in bats’ wings serve only to disperse heat g

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

Hide Tags

Director
Director
User avatar
Joined: 25 Aug 2007
Posts: 927

Kudos [?]: 1504 [0], given: 40

WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 14 May 2010, 04:36
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

78% (01:05) correct 22% (01:12) wrong based on 497 sessions

HideShow timer Statistics

Networks of blood vessels in bats’ wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus paleontologists’ recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the hypothesis that Sandactylus flew by flapping its wings, not just by gliding.

In the passage, the author develops the argument by

(A) forming the hypothesis that best explains several apparently conflicting pieces of evidence

(B) reinterpreting evidence that had been used to support an earlier theory

(C) using an analogy with a known phenomenon to draw a conclusion about an unknown phenomenon

(D) speculating about how structures observed in present-day creatures might have developed from similar structures in creatures now extinct

(E) pointing out differences in the physiological demands that flight makes on large, as opposed to small, creatures

Similar Question : LINK
[Reveal] Spoiler: OA

_________________

Want to improve your CR: http://gmatclub.com/forum/cr-methods-an-approach-to-find-the-best-answers-93146.html
Tricky Quant problems: http://gmatclub.com/forum/50-tricky-questions-92834.html
Important Grammer Fundamentals: http://gmatclub.com/forum/key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html


Last edited by hazelnut on 01 Sep 2017, 20:43, edited 5 times in total.
Reformatted the question.

Kudos [?]: 1504 [0], given: 40

Senior Manager
Senior Manager
avatar
Joined: 24 Jul 2009
Posts: 287

Kudos [?]: 167 [0], given: 0

Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 14 May 2010, 05:43
ykaiim wrote:
Good one.

Networks of blood vessels in bats’ wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus aleontologists’ recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the hypothesis that Sandactylus flew by flapping its wings, not just by gliding.

In the passage, the author develops the argument by
(A) forming the hypothesis that best explains several apparently conflicting pieces of evidence >>> There are NO several pieces of conflicting evidences..!!
(B) reinterpreting evidence that had been used to support an earlier theory >>> The evidence is not REINTERPRETED...evidence has not not been changed/convoluted to support the other theory
(C) using an analogy with a known phenomenon to draw a conclusion about an unknown phenomenon >>> CORRECT
(D) speculating about how structures observed in present-day creatures might have developed from similar structures in creatures now extinct >>> There is no discussion about the evolution from Sandactylus to bats..!!
(E) pointing out differences in the physiological demands that flight makes on large, as opposed to small, creatures >>>Out of scope

Kudos [?]: 167 [0], given: 0

BSchool Forum Moderator
avatar
Joined: 02 Oct 2009
Posts: 589

Kudos [?]: 449 [0], given: 412

GMAT 1: 530 Q47 V17
GMAT 2: 710 Q50 V36
WE: Business Development (Telecommunications)
GMAT ToolKit User Premium Member Reviews Badge
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 14 May 2010, 07:02
the flaw in the ARG is that author exaggerated his conclusion by considering Bat & dinosaur same....

any option specifying this should be answer...

C does it :)

Kudos [?]: 449 [0], given: 412

Manager
Manager
avatar
Joined: 16 Feb 2010
Posts: 179

Kudos [?]: 34 [0], given: 17

Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 14 May 2010, 15:12
"c" for sure , similer Q is mentioned in OG 11

Kudos [?]: 34 [0], given: 17

2 KUDOS received
BSchool Forum Moderator
User avatar
Joined: 23 Jul 2010
Posts: 556

Kudos [?]: 971 [2], given: 321

GPA: 3.4
WE: General Management (Non-Profit and Government)
GMAT ToolKit User Premium Member
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 18 Nov 2013, 06:29
2
This post received
KUDOS

Kudos [?]: 971 [2], given: 321

Director
Director
User avatar
Joined: 10 Mar 2013
Posts: 593

Kudos [?]: 460 [0], given: 200

Location: Germany
Concentration: Finance, Entrepreneurship
GMAT 1: 580 Q46 V24
GPA: 3.88
WE: Information Technology (Consulting)
GMAT ToolKit User
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 17 Apr 2015, 13:15
Hi Experts, please advice on this one. I had great problems to decide between B and C. Picked B.

Why is B wrong ? Reinterpreting the evidence = evidence that bats wings serve to disperse heat for the discovery of Sandactctylus
New theory about dinos - earlier theory about Bats, so this evidence used in the eralier theory about bats is used to support a recent theory about dinos.......
_________________

When you’re up, your friends know who you are. When you’re down, you know who your friends are.

Share some Kudos, if my posts help you. Thank you !

800Score ONLY QUANT CAT1 51, CAT2 50, CAT3 50
GMAT PREP 670
MGMAT CAT 630
KAPLAN CAT 660

Kudos [?]: 460 [0], given: 200

1 KUDOS received
Intern
Intern
avatar
Joined: 01 Oct 2014
Posts: 46

Kudos [?]: 279 [1], given: 188

Reviews Badge
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 08 Sep 2015, 08:06
1
This post received
KUDOS
1
This post was
BOOKMARKED
Networks of blood vessels in bats’ wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus
paleontologists’ recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the
hypothesis that Sandactylus flew by flapping its wings, not just by gliding.
In the passage, the author develops the argument by
(A) forming the hypothesis that best explains several apparently conflicting pieces of evidence
(B) reinterpreting evidence that had been used to support an earlier theory
(C) using an analogy with a known phenomenon to draw a conclusion about an unknown phenomenon
(D) speculating about how structures observed in present-day creatures might have developed from similar structures in creatures now extinct
(E) pointing out differences in the physiological demands that flight makes on large, as opposed to small, creatures


Press kudos if you like the post

Kudos [?]: 279 [1], given: 188

1 KUDOS received
Manager
Manager
avatar
Joined: 17 Aug 2015
Posts: 102

Kudos [?]: 92 [1], given: 341

Location: India
Concentration: Strategy, General Management
Schools: Duke '19 (II)
GMAT 1: 750 Q49 V42
GPA: 4
WE: Information Technology (Investment Banking)
GMAT ToolKit User
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 14 Sep 2015, 21:53
1
This post received
KUDOS
Hi There! I have outlined the explanation in the quote below. This is a type of question that asks you to analyze which method is used to develop the argument - is the author giving an example? comparing one evidence with another? refuting evidence with another? contrasting two cases?

Read below:

amatya wrote:
Networks of blood vessels in bats’ wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus
paleontologists’ recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the
hypothesis that Sandactylus flew by flapping its wings, not just by gliding.
In the passage, the author develops the argument by
(A) forming the hypothesis that best explains several apparently conflicting pieces of evidence - the evidence used to draw a conclusion is not contradictory to any other evidence mentioned.
(B) reinterpreting evidence that had been used to support an earlier theory - this is tempting, but note that the evidence given (that bats use blood vessels to disperse heat created ONLY during flight) is not REinterpreted in any way. It is interpreted in only one way. Had the evidence lead to another, different conclusion or had it had two possible interpretations, this would be right. In this case, it is not.
(C) using an analogy with a known phenomenon to draw a conclusion about an unknown phenomenon - this is correct. The author uses a known phenomenon (bats' use of their blood vessels to disperse heat created ONLY during flight) to draw a conclusion about a phenomenon in which exactly the same evidence is available about a different species. Thus, they are analogous.
(D) speculating about how structures observed in present-day creatures might have developed from similar structures in creatures now extinct - there is no speculation about the evolution of the structures. Rather, the argument is about the use of a particular physical feature.
(E) pointing out differences in the physiological demands that flight makes on large, as opposed to small, creatures - no such comparison is made with regard to size. The argument focuses on function, not size.

Press kudos if you like the post



Hope this helps.
_________________

If you like this post, be kind and help me with Kudos!

Cheers!

Kudos [?]: 92 [1], given: 341

Manager
Manager
User avatar
Joined: 21 Jun 2014
Posts: 149

Kudos [?]: 97 [0], given: 59

Location: United States
Concentration: General Management, Strategy
GMAT 1: 630 Q45 V31
GPA: 3.4
WE: Engineering (Computer Software)
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 06 Oct 2015, 00:23
Hello BrainLab,

"Networks of blood vessels in bats’ wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings"

Next:
"winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings "

Conclusion Sandactylus flew by flapping its wings, not just by gliding.

Authors is basing the conclusion on drawing similarity between Bats and Sandactylus .Option B talks about: "reinterpreting evidence that had been used to support an earlier theory" what is the earlier theory here ?

Author has drawn an analogy between Bats and Sandactylus and assumed the same logic applies for Sandactylus too .

C is the right answer.
_________________

Regards,
Manish Khare
"Every thing is fine at the end. If it is not fine ,then it is not the end "

Kudos [?]: 97 [0], given: 59

Intern
Intern
avatar
Joined: 19 Aug 2015
Posts: 29

Kudos [?]: 24 [0], given: 11

Concentration: Technology, Strategy
GPA: 3.3
WE: Consulting (Computer Software)
GMAT ToolKit User
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 06 Oct 2015, 13:51
The fact about about Sandactylus: The winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings.

Analogy meaning: a comparison between two things, typically on the basis of their structure and for the purpose of explanation or clarification
Conclusion: Sandactylus flew by flapping its wings, not just by gliding

From the author's statement, There is no theory attached to this from the past fact. Author is trying to compare the two based on the present day known fact and past fact. Hence B
_________________

When you want to succeed as bad as you want to breathe ...then you will be successfull....

Kudos [?]: 24 [0], given: 11

Director
Director
avatar
B
Joined: 13 Feb 2015
Posts: 821

Kudos [?]: 8 [0], given: 32

Premium Member
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 06 Jul 2017, 08:13
Merged topics. Please, search before posting questions!
_________________

Please Read: Verbal Posting Rules

Kudos [?]: 8 [0], given: 32

VP
VP
User avatar
G
Status: Learning
Joined: 20 Dec 2015
Posts: 1070

Kudos [?]: 69 [0], given: 533

Location: India
Concentration: Operations, Marketing
GMAT 1: 670 Q48 V36
GRE 1: 314 Q157 V157
GPA: 3.4
WE: Manufacturing and Production (Manufacturing)
Re: Networks of blood vessels in bats’ wings serve only to disperse heat g [#permalink]

Show Tags

New post 07 Jul 2017, 08:27
Imo C using an analogy with a known phenomenon to draw a conclusion about an unknown phenomenon
The author states that fly by flapping wings and the network of blood vessels in the wings are used to disperse heat generated y flapping of the wings.
The author uses this piece of evidence to show that the Sandactylus used similar style for flying.
The network of blood vessels found on the wings of the Sandactylus serves to dissipate heat similar to bat.
_________________

We are more often frightened than hurt; and we suffer more from imagination than from reality

Kudos [?]: 69 [0], given: 533

Re: Networks of blood vessels in bats’ wings serve only to disperse heat g   [#permalink] 07 Jul 2017, 08:27
Display posts from previous: Sort by

Networks of blood vessels in bats’ wings serve only to disperse heat g

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


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.