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In their native habit, amaryllis plants go dormant when the

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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 04 Mar 2012, 22:57
angel2009 wrote:
In their native habit, amaryllis plants go dormant when the soil in which they are growing dries out during the dry season. Therefore, if amaryllis plants kept as houseplants are to thrive, water should be withheld from them during part of the year so that the plants go dormant.
Which one of the following is an assumption on which the argument depends?
(A) Most kinds of plants go dormant at some time or other during the year.
(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are.
(C) Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.
(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.


1 : Amaryllis plant go dormant when soil dries out. ( why ??? what happens when they go dormant )
2 : to thrive amaryllis plants as houseplant, water should be withheld from them so that plants go dormant. (from here we assume that they do not require water when they go dormant )


options E points out the fact in other language ""Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods". hence IMO E is the correct answer
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 04 Mar 2012, 23:03
It has to be E. This is the only answer choice which connects the non-sensical first half of the sentence (premise) to the second half (conclusion).

Because first half the question introduces drying up. Second half talks about withholding water yet again.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 05 Mar 2012, 11:48
Is C wrong because it is restating the conclusion?

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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 15 Mar 2012, 17:59
(A) It is not true that Most kinds of plants go dormant at some time or other during the year.
(B) It is not true that Amaryllis are more difficult keep as houseplants than other kinds of plants are.
(C) It is not true that Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.
(D) It is not true that Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
(E) It is not true that Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.

out ot the above negated option, D weakens the conclusion.

E is wrong bcoz it speaks about amaryllis in native habitat not amaryllis grown as houseplants
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 15 Mar 2012, 19:39
In their native habit, amaryllis plants go dormant when the soil in which they are growing dries out during the dry season. Therefore, if amaryllis plants kept as houseplants are to thrive, water should be withheld from them during part of the year so that the plants go dormant.

Which one of the following is an assumption on which the argument depends?

(A) Most kinds of plants go dormant at some time or other during the year.
(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are.
(C) Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.
(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.

E is right because assumption should lead to conclusion, conclusion is coming to an observation based on a premise. now if conclusion has to be right here "amaryllis plants thrive as houseplants" assumption has to be they thrive in their native habitats also and so they will thrive here.

D is talking about time, this is irrelevant to the passage, no where does it say how much time should it be dormant.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 15 Mar 2012, 20:42
first pick E nyc question D is straight out of scope
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 16 Mar 2012, 08:52
I will go with D - can we have the official answer please?
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 23 Mar 2012, 00:11
mysterio wrote:
angel2009 wrote:
In their native habit, amaryllis plants go dormant when the soil in which they are growing dries out during the dry season. Therefore, if amaryllis plants kept as houseplants are to thrive, water should be withheld from them during part of the year so that the plants go dormant.
Which one of the following is an assumption on which the argument depends?
(A) Most kinds of plants go dormant at some time or other during the year.
(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are.
(C) Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.
(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.


1 : Amaryllis plant go dormant when soil dries out. ( why ??? what happens when they go dormant )
2 : to thrive amaryllis plants as houseplant, water should be withheld from them so that plants go dormant. (from here we assume that they do not require water when they go dormant )


options E points out the fact in other language ""Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods". hence IMO E is the correct answer



Well, I have the following observation to make:

E - Speaks about some other benefit other than just surviving. Who knows about that? Where is it assumed that there can be another benefit without doing that? Where does it state that the plant's survival or routine goes fine without the dormancy period. In fact, it is explicitly mentioned that despite keeping in house, it needs to have that dormant phase.
Hence, clearly dormancy phase is required for survival or "thriving" at least. But, who knows/cares about "some other" benefiting some way?
A little far -fetched isn't it, especially, when both premises talk about dormancy periods, why do we have to question the purpose of periods.
Our job is to really compare the two scenarios in the two premises(Keeping in house and natural habitat).

Hence, C.

Well, about D, Premise says - "if amaryllis plants kept as houseplants are to thrive, water should be withheld from them during part of the year so that the plants go dormant"

Meaning, if withheld, then thrives.
If A, then B.
D clearly says - If not thriving, then likely to have too short dormancy. Again, how do we know?
If not B, then not A, is fine => Not thriving, then Not withheld from water(leave the other possibilities that might kill the plant - OOS).
But, how can we say, not withholding water => short or long dormant period????? This further assumes that longer the dormancy, better chance of thriving, again far-fetched, IMO.

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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 25 Mar 2012, 13:29
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This was a fun question :).

ANSWER: E

On my first reading I knew it was (E), but I didn't like the "preventing death" part. I went back and eliminated all the other ones, and re-read (E), making sense of the "preventing death" part. My reasoning was as follows:

Amaryllis go dormant during the dry season. It we want amaryllis to thrive as houseplants we should also keep them dormant.

There is a little disconnect here, and thus, to be valid, the argument requires a little more. So where's the gap? We want the amaryllis to thrive indoors, but nowhere in the argument does it say that an outdoor amaryllis, in order to thrive, must go dormant.

We are looking for an answer choice that plugs up this gap.

With that in mind I eliminated as follows:

(A) Most kinds of plants go dormant at some time or other during the year.

Who cares about other plants (I mean question-wise, not in general) :)

(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are.

Again, who cares about other plants.

(C) Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.

This may help the amaryllis go dormant (or it may not). It definitely doesn't bridge the gap, i.e., does dormancy allow an amaryllis to thrive.

(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.

This answer choice shows the importance between dormancy and thriving. However, it does not address the assumption: in order to thrive an amaryllis must first go dormant.

(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods. ANSWER

The key here is connecting going dormant with thriving. This answer suggests that the amaryllis doesn't just go dormant in order to survive. It leaves open the possibility that the amaryllis goes dormant in order to thrive. That is, if you want an amaryllis to thrive--either outdoors or indoors--you have to make it go dormant.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 26 Mar 2012, 03:20
IMO E
This a Logic Gap argument. a right answer must be fit logically in the argument.
I am able to zero down with C and E.
C:
negate C: Water should not necessarily be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.

Conclusion does not become invalid due to this negation. hence C is not the answer.

E
Going dormant not necessarilybenefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.

Conclusion fails as going dormant does not benifit the plant kept as household
hence E
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 24 May 2012, 13:54
raviram80 wrote:
Hi

Could someone explain the answer here?

I thought answer is D.

Thanks


(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
This is too extreme-cross
(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.
So the plant goes dormant because it wants to survive the dry season. If so then in house plant does not need to go dormant due to abundant supply of water. The argument therefore must assume other benefit the plant could get.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 24 May 2012, 16:14
Vote for E

Conclusion
if amaryllis plants kept as houseplants are to thrive, water should be withheld from them during part of the year so that the plants go dormant

Premise
native habit, amaryllis plants go dormant when the soil in which they are growing dries out during the dry season


(A) Most kinds of plants go dormant at some time or other during the year.
--> Out of scope

(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are.
--> Out of scope

(C) Water should be withheld from amaryllis plants kept as houseplants during the exact time of year that corresponds to the dry season in their native habitat.
--> exact time of year--> to extreme

(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time.
--> This weaken the conclusion

(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods.
--> "dormant benefits amaryllis plants" provide additionl premise to support conclusion
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 24 May 2012, 16:47
+1 E

The argument assumes that amarilis always must be "dried" yearly, no matter whether the weather is dry or not. In other words, going dormant is required independently from the weather.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 06 Jun 2012, 08:05
I thought C or E. I end up choosing E because the last problem i did, I chose something that is too absolute and certain and tries to imitate the conclusion and got wrong. So I chose something more indirect to avoid "trap". :D
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 06 Jun 2012, 21:51
Amaryllis plants going dormant during the period of dry season must have something to do with these plants thriving other than just preventing death.
Option E fill in that gap.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 11 Jun 2012, 18:03
I also do not understand why E is picked, but intuitively I chose E haha.
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 12 Jun 2012, 07:31
Can someone explain in detail why c is not correct?
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 12 Jun 2012, 08:06
I got E :)

btw Nice explanation Chris!
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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 10 Jul 2012, 05:26
Went with E.

If there is no real benefit of withholding water from the household types, then you probably might cause more harm than good to the plant, thereby probably reducing its chance of thriving.

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Re: In their native habit, amaryllis plants go dormant when the [#permalink] New post 18 Jul 2012, 07:02
I'll add my 2 cents:

dry --> dormant
------------
thrive --> dormant

What is missing: thrive --> dry

SO E.

If you narrowed it down to D and E, you could have eliminated D on the basis of it being too extreme "any".
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Re: In their native habit, amaryllis plants go dormant when the   [#permalink] 18 Jul 2012, 07:02
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