|
Author |
Message |
|
TAGS:
|
|
|
Manager
Joined: 19 Jul 2012
Posts: 149
Location: India
Concentration: Marketing, International Business
GMAT 1: 610 Q49 V25
GPA: 3.3
Followers: 1
Kudos [?]:
40
[0], given: 23
|
A newborn kangaroo, or joey, is born after a short gestation [#permalink]
 19 Nov 2012, 21:52
Question Stats:
50% (02:22) correct
50% (01:28) wrong based on 4 sessions
A newborn kangaroo, or joey, is born after a short gestation period of only 39 days. At this stage, the joey’s hind limbs are not well developed, but its forelimbs are well developed, so that it can climb from the cloaca into its mother’s pouch for further development. The recent discovery that ancient marsupial lions were also born with only their forelimbs developed supports the hypothesis that newborn marsupial lions must also have needed to climb into their mothers’ pouches.
The argument in this passage relies on which of the following assumptions?
[A] All animals that are born after a short gestation period are born with some parts of their bodies underdeveloped.
[B] Well developed forelimbs would have been more advantageous to ancient marsupial lions than well developed hind limbs would have been.
[C] If the newborn marsupial lion did not climb into its mother’s pouch, then paleontologists would be able to find evidence of this fact.
[D] Newborn marsupial lions that crawled into their mothers’ pouches could not have done so had they not had only their forelimbs developed at birth.
[E] Newborn marsupial lions would not have had only their forelimbs developed if this development were of no use to the marsupial lions.
Pls explain how you comprehend two negation in a sentence?
OA Post discussion..
|
|
|
|
|
|
|
Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 3104
Location: Pune, India
Followers: 567
Kudos [?]:
1994
[1] , given: 92
|
Re: A newborn kangaroo [#permalink]
20 Nov 2012, 04:55
1
This post received
KUDOS
Vineetk wrote: A newborn kangaroo, or joey, is born after a short gestation period of only 39 days. At this stage, the joey’s hind limbs are not well developed, but its forelimbs are well developed, so that it can climb from the cloaca into its mother’s pouch for further development. The recent discovery that ancient marsupial lions were also born with only their forelimbs developed supports the hypothesis that newborn marsupial lions must also have needed to climb into their mothers’ pouches.
The argument in this passage relies on which of the following assumptions?
[A] All animals that are born after a short gestation period are born with some parts of their bodies underdeveloped.
[B] Well developed forelimbs would have been more advantageous to ancient marsupial lions than well developed hind limbs would have been.
[C] If the newborn marsupial lion did not climb into its mother’s pouch, then paleontologists would be able to find evidence of this fact.
[D] Newborn marsupial lions that crawled into their mothers’ pouches could not have done so had they not had only their forelimbs developed at birth.
[E] Newborn marsupial lions would not have had only their forelimbs developed if this development were of no use to the marsupial lions.
Pls explain how you comprehend two negation in a sentence?
OA Post discussion.. Take some time to understand the argument first. "A joey has a short gestation period but its forelimbs are well developed so that it can climb into its mother’s pouch for further development." The argument is telling you that the reason the forelimbs of a joey are well developed is that it needs to climb into its mother's pouch. "marsupial lions were also born with only their forelimbs developed so newborn marsupial lions must also have needed to climb into their mothers’ pouches." It further states that marsupial lions were also born with only forelimbs developed. So they must have needed to climb into their mother's pouches too. The argument assumes here that forelimbs were developed for a reason and that reason was 'climbing into mother's pouch'. It assumes that if the lions did not have a need for the forelimbs to be developed, the forelimbs would not have been developed. Since the forelimbs were developed at birth, it was for a reason. Hence E is correct. As for D, the argument is not assuming this. D - Newborn marsupial lions that crawled into their mothers’ pouches could not have done so had they not had only their forelimbs developed at birth. The argument says that developed forelimbs implies crawling into mother's pouch. It doesn't say that crawling into mothers' pouches implies developed forelimbs. Notice what has been found and what has been implied. It has been found that these lions had developed forelimbs. This implies that they crawled into pouches. If we were given that it has been found that the lions crawled into their mothers' pouches and that this implies that their forelimbs must have been developed, then we could have said that the argument is assuming that without developed forelimbs, the lions could not have crawled into their mothers' pouches. Hence D is not correct. It comes down to understanding conditional sentences.
_________________
Karishma
Veritas Prep | GMAT Instructor
My Blog
Save 10% on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.
Veritas Prep Reviews
|
|
|
|
|
|
Director
Joined: 02 Jul 2012
Posts: 753
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Followers: 19
Kudos [?]:
255
[0], given: 45
|
Re: A newborn kangaroo [#permalink]
20 Nov 2012, 03:51
Vineetk wrote: A newborn kangaroo, or joey, is born after a short gestation period of only 39 days. At this stage, the joey’s hind limbs are not well developed, but its forelimbs are well developed, so that it can climb from the cloaca into its mother’s pouch for further development. The recent discovery that ancient marsupial lions were also born with only their forelimbs developed supports the hypothesis that newborn marsupial lions must also have needed to climb into their mothers’ pouches.
The argument in this passage relies on which of the following assumptions?
[A] All animals that are born after a short gestation period are born with some parts of their bodies underdeveloped.
[B] Well developed forelimbs would have been more advantageous to ancient marsupial lions than well developed hind limbs would have been.
[C] If the newborn marsupial lion did not climb into its mother’s pouch, then paleontologists would be able to find evidence of this fact.
[D] Newborn marsupial lions that crawled into their mothers’ pouches could not have done so had they not had only their forelimbs developed at birth.
[E] Newborn marsupial lions would not have had only their forelimbs developed if this development were of no use to the marsupial lions.
Pls explain how you comprehend two negation in a sentence?
OA Post discussion.. Conclusion -- > Only forelimbs developed means marsupial lions had a certain use for them. Premise --> Developed forelimbs used by kangaroos for a certain use. Assumption --> Reason for development same in both animals (or) Development useful in both animals. clearly addresses this assumption adn also passes the LEN test. Negating , we get: Newborn marsupial lions may have had only their forelimbs developed even if this development were of no use to the marsupial lions. This clearly kills the conclusion. If the development was useless, then we cannot say that the lions would have used them for a certain requirement. Kudos Please... If my post helped.
_________________
Kudos Please... If my post helped.
Thanks To The Almighty - My GMAT Debrief
My Own CR Question 1|My Own CR Question 2|My Own DS Question 1|My Own DS Question 2|
My Own PS Question 1
|
|
|
|
|
|
Intern
Joined: 17 Nov 2012
Posts: 11
Location: United States
Concentration: General Management, Technology
GMAT 1: 640 Q49 V26
GMAT 2: 640 Q49 V29
GPA: 3.62
Followers: 0
Kudos [?]:
5
[0], given: 0
|
Re: A newborn kangaroo [#permalink]
20 Nov 2012, 18:47
After 1'40'', I can only eliminate A, B, C.
I didn't get the meaning of D and E, then I make a guess on D which is wrong.
I have a question here. After 1'30'', if you only eliminate 3 out 5 answers, you make a educated guess, or spend extra 1 more minute. I am really weak at RC. So I try to save as much time for RC by finish SC in 1 minute and CR in 1 minute and half. If I get stuck in CR for 1'30'', I usually POE as much as I can, then make a guess. Is that a proper way to do?
|
|
|
|
|
|
Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 3104
Location: Pune, India
Followers: 567
Kudos [?]:
1994
[0], given: 92
|
Re: A newborn kangaroo [#permalink]
21 Nov 2012, 20:53
paladin3828 wrote: After 1'40'', I can only eliminate A, B, C.
I didn't get the meaning of D and E, then I make a guess on D which is wrong.
I have a question here. After 1'30'', if you only eliminate 3 out 5 answers, you make a educated guess, or spend extra 1 more minute. I am really weak at RC. So I try to save as much time for RC by finish SC in 1 minute and CR in 1 minute and half. If I get stuck in CR for 1'30'', I usually POE as much as I can, then make a guess. Is that a proper way to do? Sure. No point wasting too much time on one question. That said, during practice, ensure that you understand the logic used in every question and give as much time as required to do it.
_________________
Karishma
Veritas Prep | GMAT Instructor
My Blog
Save 10% on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.
Veritas Prep Reviews
|
|
|
|
|
|
|
Re: A newborn kangaroo
[#permalink]
21 Nov 2012, 20:53
|
|
|
|
|
|
|
|
|
|
Moderators:
metallicafan, rajeevrks27, souvik101990, PTK, MacFauz, noboru, kissthegmat, carcass, willigetmylifeback, mikemcgarry, doe007, Vercules, Legendaddy, tuanquang269, RaviChandra, Marcab, Narenn
|
close
