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Amphibians have been able to maintain a specific level of hydration...

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Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 09 Nov 2016, 10:39
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34% (00:42) correct 66% (00:43) wrong based on 258 sessions

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Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.
A) which adjusted
B) that adjusts
C) which has adjusted
D) that has been adjusting
E) having adjusted

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[Reveal] Spoiler: OA

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 10 Nov 2016, 03:52
souvonik2k wrote:
Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.
A) which adjusted
B) that adjusts
C) which has adjusted
D) that has been adjusting
E) having adjusted

Source-Gmatfree


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A seems to be better than the others. What's the OA?


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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 10 Nov 2016, 07:02
ProfX wrote:
souvonik2k wrote:
Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.
A) which adjusted
B) that adjusts
C) which has adjusted
D) that has been adjusting
E) having adjusted

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A seems to be better than the others. What's the OA?


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You're right.
The Official Answer is A.
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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 10 Nov 2016, 08:46
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souvonik2k wrote:
ProfX wrote:
souvonik2k wrote:
Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.
A) which adjusted
B) that adjusts
C) which has adjusted
D) that has been adjusting
E) having adjusted

Source-Gmatfree


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A seems to be better than the others. What's the OA?


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You're right.
The Official Answer is A.


[A] Seems to convey that it was a one time activity that happened in the past and no longer happens.
[B] Addresses the situation, whenever the Amphibians move in and out of water, there are harmones that adjust permeability of their skin.

Can you please provide the OE?

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 10 Nov 2016, 08:54
Got it.

[B} has S-V issue, harmones - adjusted

So B,C,E all are out.

Out of [A] and [E], E is out as a relative pronoun should be followed, after a clause that is used to define a noun.

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 27 Aug 2017, 02:04
Not clear - why is B incorrect? - isnt it a present-tense activity of hormones that adjust permeability? (I mean this phenomenon is till happening)?
A would mean that amphibians developed it at a point in time (in the past) and that has adjusted the permeability of the skin?
Expert advice needed, would like to understand the flaw in my understanding here :)

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 27 Aug 2017, 02:55
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This is a poorly written question.
Apart from A,all the answer choices are wrong because of S-V issue.Now lets analyze A.First,we need to use a comma before which and second we need to use that instead of the non essential which.

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 27 Aug 2017, 03:07
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Madhavi1990 wrote:
Not clear - why is B incorrect? - isnt it a present-tense activity of hormones that adjust permeability? (I mean this phenomenon is till happening)?
A would mean that amphibians developed it at a point in time (in the past) and that has adjusted the permeability of the skin?
Expert advice needed, would like to understand the flaw in my understanding here :)


Hi Madhavi1990 ,

B has Subject Verb error. It says Hormones THAT adjusts. Hormones are plural, hence it should be adjust.

I agree with your point on A but A is the only best possible answer.

Does that make sense?
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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 27 Aug 2017, 07:48
abhimahna wrote:
Madhavi1990 wrote:
Not clear - why is B incorrect? - isnt it a present-tense activity of hormones that adjust permeability? (I mean this phenomenon is till happening)?
A would mean that amphibians developed it at a point in time (in the past) and that has adjusted the permeability of the skin?
Expert advice needed, would like to understand the flaw in my understanding here :)


Hi Madhavi1990 ,

B has Subject Verb error. It says Hormones THAT adjusts. Hormones are plural, hence it should be adjust.

I agree with your point on A but A is the only best possible answer.

Does that make sense?


yes completely - I realize the S-V issue in B here

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Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 28 Aug 2017, 23:56
We use "which" instead of "That" as the sentence after hormones is an additional information and the former sentence is complete even without it.

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Re: Amphibians have been able to maintain a specific level of hydration... [#permalink]

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New post 30 Aug 2017, 04:47
I feel that it is not a good quality question. Although A seems to be the best answer out of all the 5.

Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.

Developing the hormones happened in the past but adjusting the permeability still happens. IMO which adjust the permeability of the skin is right.

Experts please share your thoughts ? chetan2u , mikemcgarry , sayantanc2k

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Re: Amphibians have been able to maintain a specific level of hydration...   [#permalink] 30 Aug 2017, 04:47
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Amphibians have been able to maintain a specific level of hydration...

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