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Networks of blood vessels in bats wings serve only

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Networks of blood vessels in bats wings serve only [#permalink] New post 14 May 2010, 03:36
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Question Stats:

77% (02:04) correct 23% (01:10) wrong based on 105 sessions
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
(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
[Reveal] Spoiler: OA

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Last edited by mau5 on 16 Nov 2013, 06:18, edited 3 times in total.
Added the OA
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Re: Networks of blood vessels in bats [#permalink] New post 14 May 2010, 04:43
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
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Re: Networks of blood vessels in bats [#permalink] New post 14 May 2010, 06:02
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 :)
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Re: Networks of blood vessels in bats [#permalink] New post 14 May 2010, 14:12
"c" for sure , similer Q is mentioned in OG 11
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Re: Networks of blood vessels in bats wings serve only [#permalink] New post 18 Nov 2013, 05:29
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Re: Networks of blood vessels in bats wings serve only [#permalink] New post 17 Apr 2015, 12:15
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.......
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Re: Networks of blood vessels in bats wings serve only   [#permalink] 17 Apr 2015, 12:15
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