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The chanterelle, a type of wild mushroom, grows beneath host trees suc

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The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post Updated on: 07 Nov 2018, 03:40
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The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?


(A) The number of wild mushrooms harvested has increased in recent years.

(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.

(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.

(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.

(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.

Originally posted by ssandeepan on 19 Aug 2008, 05:24.
Last edited by Bunuel on 07 Nov 2018, 03:40, edited 1 time in total.
Renamed the topic and edited the question.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 20 Aug 2008, 15:23
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OA is D.
harvesting means cutting the mushrooms. So the conslusion is cutting the mushrooms endangers the tree.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 19 Aug 2008, 07:20
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ssandeepan wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?
(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.


IMO D) .... since number of mushrooms keep on growing even when they are harvested it does not endager the tree.

E) actually supports the argument.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 19 Aug 2008, 13:51
2
Premise1: C grows beneath D.
Premise2: D provides sugar to C.
Premise3: C provides water to D.
Premise4: Relationship is mutual.
Conclusion: C beneath D seriously endangers the D.

(A) The number of wild mushrooms harvested has increased in recent years.
Does not point what happens to D because of this phenomenon, so not relavant.

(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
Does not point why C beneath D is bad for D.

(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
Environment in which C grows does not explains why for D it is bad.

(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
This may be true, however it does not attack conclusion at all on how this C and D relationship is bad for D.

(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.
This destroys the conclusion. Conclusion says because of C and D relationship, D dies, however, this tells us because of relationship D infact survives because of relationship.

IMO E.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 25 Aug 2008, 20:51
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If the harvesting of wild mushrooms stimulates future growth of those mushrooms then there is not reason to worry about the endangerement of the Douglas Fir! So "D" counters the conclusion drawn above.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 25 Aug 2008, 21:08
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ssandeepan wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?
(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.


D. the passage says "harvesting mushroom endangers the tree's life". D says harvesting mushroom stimulates more mushrooms. So harvesting is not a problem.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 17 Oct 2012, 10:20
nmohindru wrote:
ssandeepan wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?
(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.


IMO D) .... since number of mushrooms keep on growing even when they are harvested it does not endager the tree.

E) actually supports the argument.



I agree that E supports the argument,,As conclusion is cutting the trees would endanger the tree,,,,We have find option which doesn't endanger the tree how come the option D is applicable??? The harvesting of wild mushrooms stimulates future growth of those mushrooms. Kindly brief it, thank you
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 18 Oct 2012, 04:07
Maryam787 wrote:
nmohindru wrote:
ssandeepan wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?
(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments.


IMO D) .... since number of mushrooms keep on growing even when they are harvested it does not endager the tree.

E) actually supports the argument.



I agree that E supports the argument,,As conclusion is cutting the trees would endanger the tree,,,,We have find option which doesn't endanger the tree how come the option D is applicable??? The harvesting of wild mushrooms stimulates future growth of those mushrooms. Kindly brief it, thank you


The argument says that harvesting the mushrooms will endanger the tree because after being harvested, there wont be any mushrooms to provide the tree with nutrients.

Choice D says that harvesting the mushrooms would lead to further growth of mushrooms. Hence the argument's conclusion is rendered incorrect.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 17 Sep 2013, 22:40
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mba1382 wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?

(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments

Please explain your reasoning for the answers provided.

Thanks.


What is the conclusion?
"harvesting the mushroom seriously endangers these trees"

To weaken it we need to provide an explanation why harvesting the mushroom may not endanger these trees.
We know that mushrooms and trees benefit each other.
Option (D) tells us that harvesting of wild mushrooms stimulates future growth of those mushrooms. This means that even if you harvest the mushrooms, they will grow back and hence the beneficial relation will continue or perhaps even become better since harvesting stimulates future growth.
This weakens the statement that harvesting the mushrooms endangers these trees.

None of the other options weaken our conclusion.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 18 Sep 2013, 22:41
mdeepaks wrote:
VeritasPrepKarishma wrote:
mba1382 wrote:
The chanterelle, a type of wild mushroom, grows beneath host trees such as the Douglas fir, which provide it with necessary sugars. The underground filaments of chanterelles, which extract the sugars, in turn provide nutrients and water for their hosts. Because of this mutually beneficial relationship, harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt on the conclusion drawn above?

(A) The number of wild mushrooms harvested has increased in recent years.
(B) Chanterelles grow not only beneath Douglas firs but also beneath other host trees.
(C) Many types of wild mushrooms are found only in forests and cannot easily be grown elsewhere.
(D) The harvesting of wild mushrooms stimulates future growth of those mushrooms.
(E) Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments

Please explain your reasoning for the answers provided.

Thanks.


What is the conclusion?
"harvesting the mushroom seriously endangers these trees"

To weaken it we need to provide an explanation why harvesting the mushroom may not endanger these trees.
We know that mushrooms and trees benefit each other.
Option (D) tells us that harvesting of wild mushrooms stimulates future growth of those mushrooms. This means that even if you harvest the mushrooms, they will grow back and hence the beneficial relation will continue or perhaps even become better since harvesting stimulates future growth.
This weakens the statement that harvesting the mushrooms endangers these trees.

None of the other options weaken our conclusion.



Could you please explain what is wrong with the option E?


(E) strengthens the conclusion, not weakens it.
The conclusion is "harvesting the mushroom seriously endangers these trees". You could easily follow it up with option (E): "Young Douglas fir seedlings die without the nutrients and water provided by chanterelle filaments". It provides support to my conclusion that yes, harvesting the mushroom might endanger the Douglas fir trees because there seedlings will die. We need to weaken the conclusion so (E) doesn't work at all.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc  [#permalink]

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New post 31 Aug 2018, 23:32
Conclusion - Harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.

We need to find a weakener i.e. something which should say that harvesting the chanterelles would in turn do greater good to the host tree by more than compensating for the loss of nutrients and water OR something which should say that even though chanterelles are providing water and nutrients but in turn are committing greater harm to the host tree. Any answer along any of these 2 lines of reasoning would be apt.
Option 'D' is the correct answer as it says that harvesting is necessary as it stimulates the growth of more such mushrooms and this is along the lines of reasoning of the 1st statement made above.
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Re: The chanterelle, a type of wild mushroom, grows beneath host trees suc &nbs [#permalink] 31 Aug 2018, 23:32
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