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GMATPREP ChallengeQ -Even more than mountainside slides of

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GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 11 Aug 2014, 09:10
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Passage-09 GMATPrep RCs-Collection(Main article)
Even more than mountainside slides of mud or snow, naturally occurring forest fires promote the survival of aspen trees.Aspens' need for fire may seem illogical since aspens are particularly vulnerable to fires; whereas the bark of most trees consists of dead cells, the aspen's bark is a living, functioning tissue that—along with the rest of the tree—succumbs quickly to fire.

The explanation is that each aspen, while appearing to exist separately as a single tree, is in fact only the stem or shoot of a far larger organism. A group of thousands of aspens can actually constitute a single organism, called a clone, that shares an interconnected root system and a unique set of genes. Thus, when one aspen—a single stem—dies, the entire clone is affected. While alive, a stem sends hormones into the root system to suppress formation of further stems. But when the stem dies, its hormone signal also ceases. If a clone loses many stems simultaneously, the resulting hormonal imbalance triggers a huge increase in new, rapidly growing shoots that can outnumber the ones destroyed. An aspen grove needs to experience fire or some other disturbance regularly, or it will fail to regenerate and spread. Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
1. The primary purpose of the passage is to explain the
A. qualities that make a particular organism unique
B. evolutionary change undergone by a particular organism
C. reasons that a phenomenon benefits a particular organism
D. way in which two particular organisms compete for a resource
E. means by which a particular organism has been able to survive in a barren region
[Reveal] Spoiler:
C


2. It can be inferred from the passage that when aspen groves experience a "disturbance" , such a disturbance
A. leads to a hormonal imbalance within an aspen clone
B. provides soil conditions that are favorable for new shoots
C. thins out aspen groves that have become overly dense
D. suppresses the formation of too many new aspen stems
E. protects aspen groves by primarily destroying coniferous trees rather than aspens
[Reveal] Spoiler:
A


3. The author of the passage refers to "the bark of most trees" (line 6) most likely in order to emphasize the
A. vulnerability of aspens to damage from fire when compared to other trees
B. rapidity with which trees other than aspens succumb to destruction by fire
C. relatively great degree of difficulty with which aspens catch on fire when compared to other trees
D. difference in appearance between the bark of aspens and that of other trees
E. benefits of fire to the survival of various types of trees
[Reveal] Spoiler:
A


4. According to the passage, which of the following would occur if an aspen grove failed to regenerate periodically?
A. Individual aspens would cease to produce hormones
B. Individual aspens would grow outward instead of upward.
C. The root system of the grove's clone would die.
D. The grove would lose its access to sunlight
E. Soil conditions in the grove would become unfavorable for the growth of aspens.
[Reveal] Spoiler:
D


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Last edited by PiyushK on 16 Aug 2014, 03:01, edited 3 times in total.
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 11 Aug 2014, 09:47
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1) C

A. qualities that make a particular organism unique
Here the author doesn't compare the qualities of Aspen trees with other trees or organisms to make it unique. He just just mentions them. So not A

B. evolutionary change undergone by a particular organism.
The author doesn't mention any stages of evolution of the Aspen plant. So not B.

C. reasons that a phenomenon benefits a particular organism
Correct answer because the first paragraph introduces the importance of the phenomenon (forest fires) and the body paragraph explains the benefits of it.

D. way in which two particular organisms compete for a resource
The author doesn't draw a comparison between two trees. He mentions coniferous trees at the last only to explain what would happen if there were no forest fires. SO not D

E. means by which a particular organism has been able to survive in a barren region
The author doesn't even mention that the trees are growing on barren lands. So not E.

2)A

A. leads to a hormonal imbalance within an aspen clone
Correct answer because the disturbance ( mainly forest fires) lead to hormonal imbalance which subsequently lead to new shoots of stems.

B. provides soil conditions that are favorable for new shoots
The author doesn't talk about soil conditions. So not B

C. thins out aspen groves that have become overly dense
The disturbance thins out Aspen groves either thin or dense or otherwise. So cannot be the thinning of only dense groves. So not C.

D. suppresses the formation of too many new aspen stems
Actually it aids the formation of new stems. So not D.

E. protects aspen groves by primarily destroying coniferous trees rather than aspens
The disturbance only destroys Aspen trees. The author never even mentions forest fires destroying coniferous trees let alone protecting Aspen trees by destroying other trees.So not E.

3)A

A. vulnerability of aspens to damage from fire when compared to other trees
Correct answer because Aspen trees have a living bark unlike most trees which succumbs to fire quickly as stated in the passage.

B. rapidity with which trees other than aspens succumb to destruction by fire
Actually the passage says the opposite about the other trees catching fire. So not B

C. relatively great degree of difficulty with which aspens catch on fire when compared to other trees
Again the passage says that Aspen trees catch fire quickly in comparison to other trees. So not C.

D. difference in appearance between the bark of aspens and that of other trees
The author doesn't talk about the appearance of the barks. So not D.

E. benefits of fire to the survival of various types of trees
The author says that fires are important for Aspen trees alone but he doesn't mention any other trees whose survival is aided by forest fires. So not E

4)D

A. Individual aspens would cease to produce hormones
The passage never mentions that the shoots would stop producing hormones. In fact it says the exact opposite. So not A

B. Individual aspens would grow outward instead of upward.
The passage doesn't talk about the direction of the growth of the grove.So not B

C. The root system of the grove's clone would die.
The passage never says that the root system would die if it doesn't regenerate. It only says that it would cease to grow new shoots.

D. The grove would lose its access to sunlight
Correct answer because if it doesn't produce new shoots, coniferous trees will invade the groves and block sunlight as mentioned in the last line of the passage.

E. Soil conditions in the grove would become unfavorable for the growth of aspens.
The author never talks about effect of regeneration on the soil conditions. So not E

Last edited by PiyushK on 13 Aug 2014, 21:28, edited 1 time in total.
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 22 Aug 2014, 10:46
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4 mins 4 secs
1. C
2. A
3. A
4. D
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 25 Nov 2014, 01:39
Time taken : 8:20
Got all correct.
Wasted around 2 minutes on the last question.
Ideal time should be 6 mins, I suppose
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 09 May 2015, 09:58
For second question, initially thought the answer was C.

However, on closer reading, realized that C actually says the opposite of what is mentioned in the passage. C says that thins out aspen groves ; however, according to the passage, “disturbance” does not thin out aspen groves; “disturbance” actually results in “growing shoots that can outnumber the ones destroyed”. So, “disturbance” actually increases the density.
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 25 Jun 2015, 10:04
Answers 1c ,2a, 3a, 4d

Total time 2 minutes 51 seconds
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 10 Jul 2015, 07:05
C A A D..6 mins 33 seconds...fairly easy one..
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 29 Sep 2015, 17:27
Please, I have a question with this passage:

In question 1), I did not pick C because it states that ¨reasons that a phenomenon benefits a particular organism¨and in the passage it is just mentioned one reason (¨the resulting hormonal imbalance triggers a huge increase in new, rapidly growing shoots that can outnumber the ones destroyed¨). By contrast, after eliminating the other answers, I believed that answer A ¨qualities that make a particular organism unique¨ is supported by the quote that states ¨Aspens' need for fire may seem illogical since aspens are particularly vulnerable to fires¨.

Can sb explain??? Thank youu!!
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 29 Sep 2015, 18:43
Hi bolasao,

Let's analyse the structure of Passage.

First Para - Author Introduces the surprising fact "Destruction favor Particular tree (Aspen), The fact was surprising since Aspen are equally impacted from Fire"

Second Para - Author presented reason why Destruction help and what will happen in absence of Destruction (Fire)

Only two options come close. Option A and Option C.

A. qualities that make a particular organism unique
This is way to exaggerated. Author has not said, this organism is unique. Although to readers it may appear as unique but it may or may not be unique.
Although in Passage there are couple of occurrence of word "Unique" but those in some other reference.
This is how test maker play with the candidate thinking and put the trap.

Incorrect

C. reasons that a phenomenon benefits a particular organism
This is exactly Passage speaks about. Author talks about phenomenon "in first para" and "In second para" how that phenomenon helped particular organism "Aspan"


Hope it helps
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 29 Sep 2015, 18:55
bolasao wrote:
Please, I have a question with this passage:

In question 1), I did not pick C because it states that ¨reasons that a phenomenon benefits a particular organism¨and in the passage it is just mentioned one reason (¨the resulting hormonal imbalance triggers a huge increase in new, rapidly growing shoots that can outnumber the ones destroyed¨). By contrast, after eliminating the other answers, I believed that answer A ¨qualities that make a particular organism unique¨ is supported by the quote that states ¨Aspens' need for fire may seem illogical since aspens are particularly vulnerable to fires¨.

Can sb explain??? Thank youu!!



Reasons are explained in the second passage. Second passage tells us why an aspen reacts in such way to any disturbance such as fire. Now, if we were not told about the
aspens working as a single organism...and so on, we wouldn't know why is it growing instead. First passage says that it may SEEM illogical that Aspens need fire or a phenomenon to grow, and the same is explained/reasoned in the following passage.


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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 26 May 2016, 21:04


Thanks for the question, took me 5'19'' - all correct.
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Re: GMATPREP ChallengeQ -Even more than mountainside slides of [#permalink]

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New post 30 Jul 2016, 02:43
time 6 mins
all correct.
Doing better on time now.
Re: GMATPREP ChallengeQ -Even more than mountainside slides of   [#permalink] 30 Jul 2016, 02:43
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