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Although the turtle has been toothless for more than 150

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Although the turtle has been toothless for more than 150 [#permalink] New post 15 Jul 2008, 08:36
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42% (01:28) correct 58% (00:33) wrong based on 27 sessions
Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth.
a) their horny jaws function for teeth
b) its horny jaws function for teeth
c) its horny jaws function as do teeth
d) the horny jaws function as teeth do
e) the horny jaws function as teeth
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 08:54
A uses their to refer to singular turtle. Wrong

B uses for. wrong

Among C, D & E, I feel do is unnecessary when the word function already encapsulates the idea that HJ performs functions similar to teeth

E is my pick.
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 11:28
straight E, cause it's the only option that compares silmilar things. C and D compares action to noun.
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 11:28
MamtaKrishnia wrote:
Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth.
a) their horny jaws function for teeth
b) its horny jaws function for teeth
c) its horny jaws function as do teeth
d) the horny jaws function as teeth do
e) the horny jaws function as teeth


IMO E is the correct answer
the problem areas as per my opinion have been marked in red color

what is the OA for this one

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Re: SC-turtle [#permalink] New post 15 Jul 2008, 15:12
Although the turtle has been toothless for more than 150 million years, in some contemporary 'turtle' species the moderately sharp and jagged edges of their horny jaws function for teeth.

a) their horny jaws function for teeth ----- 'their' is Plural - Should agree with 'turtle' in number

b) its horny jaws function for teeth ----- 'function for' is unidiomatic. It should be function AS x does.

c) its horny jaws function as do teeth

d) the horny jaws function as teeth do ------ It's the turtle's horny jaws that is being mentioned not some random horny jaw. Hence the possessive case 'its' should be used

e) the horny jaws function as teeth ------- Same as above + fuction as teeth 'do' is the correct way to compare an action.


Ans is C
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 17:01
Legend wrote:
Although the turtle has been toothless for more than 150 million years, in some contemporary 'turtle' species the moderately sharp and jagged edges of their horny jaws function for teeth.

c) its horny jaws function as do teeth

e) the horny jaws function as teeth ------- Same as above + fuction as teeth 'do' is the correct way to compare an action.



here action is immaterial, the horny jaws "replace/act as" teeth in certain species of turtle, they don't replace the action done by teeth. and the correct idiom should be "X functions as Y"
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 17:19
i think we can eliminate A for unidiomatic "function for" rather than SVA since their here refers to "turtle species" rather than turtle...am i right in this reasoning..????
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 18:10
Should be 'C'

D and E are out because of not using 'its'
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Re: SC-turtle [#permalink] New post 15 Jul 2008, 20:01
vshaunak@gmail.com wrote:
Should be 'C'

D and E are out because of not using 'its'


Its or Their is not required.. A,B,C are out..

Here subject is clear.. "contemporaty turtle species"
"in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth"
= In X the moderately sharp and jagged edges of horny jaws function as teeth.
( it clear that we are talking about X's horny jaws .. We need not to refer with possive pronoun.. )

D) Y [of horny jaws] function as Z do. "Y" not || "Z do "
E) Y [of horny jaws] function as Z. Y ||Z

E is perfect.

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Re: SC-turtle [#permalink] New post 17 Jul 2008, 04:54
OA is E.

x2suresh wrote:
vshaunak@gmail.com wrote:
Should be 'C'

D and E are out because of not using 'its'


Its or Their is not required.. A,B,C are out..

Here subject is clear.. "contemporaty turtle species"
"in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth"
= In X the moderately sharp and jagged edges of horny jaws function as teeth.
( it clear that we are talking about X's horny jaws .. We need not to refer with possive pronoun.. )

D) Y [of horny jaws] function as Z do. "Y" not || "Z do "
Thanks x2suresh
This is exactly what i was confused about. whether Y is the entire first part or just horny jaws.

E) Y [of horny jaws] function as Z. Y ||Z

E is perfect.
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Re: SC-turtle [#permalink] New post 06 Nov 2009, 17:34
Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth.
a) their horny jaws function for teeth
b) its horny jaws function for teeth
c) its horny jaws function as do teeth
d) the horny jaws function as teeth do
e) the horny jaws function as teeth

OA:E

correct idiom function as>>Eliminate A,B

Point to be noted:species can be used as both singular/plural

Between C,D,E??
The it is said to work as a possesive poison..this is not clear..please explain in detail

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Re: SC-turtle [#permalink] New post 06 Nov 2009, 19:01
my pick was E too before looking at OA and OE :)

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Re: SC-turtle [#permalink] New post 08 Feb 2010, 16:51
found this


"some contemporary turtle species", is an adverbial modifier so cannot be the main subject of the sentence


http://www.manhattangmat.com/forums/gma ... t1321.html

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Re: SC-turtle [#permalink] New post 09 Feb 2010, 17:54
Hey All,

Seems like there's still confusion on this one, so I thought I'd weigh in. There are two important splits to deal with here. The first is pronoun (singular/plural and pronoun/versus no pronoun) and the second is idiomatic.

"Although the turtle has been toothless for more than 150 million years" has no bearing on the rest of the sentence. The next clause begins with a new subject "some contemporary turtle species" (which is not an adverbial modifier, by the way), which is the most logical antecedents for any pronoun. Species is plural, so we would need "their", or else to remove the pronoun altogether. This is better, because there would be definite confusion between the two possible antecedents (turtle, species) anyway. From there, we need the right idiom, which is "x functions as y". There's no need for the verb "do", because that's obvious (i.e. I can say "The Tacoma Narrows Bridge ended up functioning as a real-life physics experiment", and don't need to say "The Tacoma Narrows Bridge Ended up functioning as a real-life physics experiment does".

This gets us to answer choice E.

Hope that helps!

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Re: SC-turtle [#permalink] New post 10 Feb 2010, 03:56
Thanks for the explanation . Tommy, however ben ku ( MGMAT instructor) has mentioned that as adverbial modifier and there not the main subject.

http://www.manhattangmat.com/forums/gma ... t1321.html

would you mind explaining some adverbial modifiers to differentiate from above ?

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Re: SC-turtle [#permalink] New post 10 Feb 2010, 10:30
Aha,

I understand now! It is indeed a modifier, though of the prepositional phrase variety (adverbial in that the verb "function" is being modified). You'll want to avoid referring to nouns in such phrases. For example:

I ran for two hours on the beach yesterday, because ITS sand was so soft.

Even though the "ITS" clearly refers to beach, there's no need to use a possessive pronoun here ("on the beach" is another prepositional/adverbial modifier). Better just to say:

I ran for two hours on the beach yesterday, because THE sand was so soft.

Hope that's clearer! Thanks for the follow-up!

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Re: SC-turtle [#permalink] New post 13 Oct 2010, 03:15
testprep2010 wrote:
E



OA is E
source is Gmatprep

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Re: SC-turtle [#permalink] New post 13 Oct 2010, 04:32
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Let us remember that the subject of the main sentence is not - some contemporary turtle species – but the moderately sharp and jagged edges.

Secondly, there is a rule that when you compare nouns you use like rather than as. If you are comparing the edges to teeth, then we have to say - the horny jaws function like teeth. -

On the contrary as is used normally while comparing actions, and therefore verbs, and therefore clauses containing verbs.

This is the problem in E. Here we are comparing sharp and jagged edges with teeth. Hence we have to say that the moderately sharp and jagged edges of the horny jaws function like teeth.

Now you may see why that the moderately sharp and jagged edges of the horny jaws function as teeth do is right as in D because as is rightly followed by teeth do which is a clause

IMO, whatever the OA, after eliminating A, B and C for too obvious reasons, between D and E, my vote will be for D

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Re: SC-turtle   [#permalink] 13 Oct 2010, 04:32
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