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# In their native habit, amaryllis plants go dormant when the soil in wh

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In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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Updated on: 06 Jan 2019, 10:26
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57% (01:41) correct 43% (01:54) wrong based on 552 sessions

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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.

Originally posted by angel2009 on 10 Mar 2010, 12:46.
Last edited by Bunuel on 06 Jan 2019, 10:26, edited 1 time in total.
Renamed the topic and edited the question.
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Re: In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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11 Mar 2010, 06:56
1
This is how I see it:

Plants go dormant because soil dries out.

Conclusion: If plants are kept in house, they should be withheld from water in order to thrive.

Clearly, you want to keep plants dormant even in home, so going dormant benefits plants in some other way.

IMO E.
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Re: In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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04 Mar 2012, 21:55
Hi

Could someone explain the answer here?

Thanks
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Re: In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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Updated on: 26 Mar 2012, 07:59
2
This was a fun question .

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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Originally posted by ChrisLele on 25 Mar 2012, 14:29.
Last edited by ChrisLele on 26 Mar 2012, 07:59, edited 3 times in total.
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Re: In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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24 May 2012, 17:14
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 soil in wh  [#permalink]

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31 Aug 2013, 05:36
raviram80 wrote:
Hi

Could someone explain the answer here?

Thanks

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?

Here, the author is quite particular about the fact that just to keep Amaryllis in their natural habitat and hence refrain from watering them in that particular dry time of the year.

(A) Most kinds of plants go dormant at some time or other during the year. - Irrelevant to the conclusion made here. Whatever happens to most plants!!
(B) Amaryllis are more difficult keep as houseplants than other kinds of plants are. - Again, this is a far reaching statement which is not proved/discussed in the original assertion.
(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. -- The exactness of the refrain from watering is not mentioned anywhere in the original statement. This cant be the assumption.
(D) Any amaryllis plant that fails to thrive is likely to have been dormant for too short a time. - This one is quite close. However, what goes against it is that this one is considering an opposite scenario in which the plant has already died due to short dormancy. 1) the period of dormancy is strictly not spoken off , 2) We yet don't know whats happens if the plant doesn't become dormant for long enough time. Rejected!
(E) Going dormant benefits amaryllis plants in their native habitat in some way other than simply preventing death during overly dry periods. - Here, This assumption , though not spoken explicitely, makes quite sense for the argument to hold true. If there is some other benefit that just avoiding the dry season, plants would DEFINITELY need to be kept dry to maintain natural habitat conditions.
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Re: In their native habit, amaryllis plants go dormant when the soil in wh  [#permalink]

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06 Jan 2019, 10:27
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Re: In their native habit, amaryllis plants go dormant when the soil in wh   [#permalink] 06 Jan 2019, 10:27
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