Some plants have extremely sensitive biological : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 12:50

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Some plants have extremely sensitive biological

Author Message
TAGS:

### Hide Tags

SVP
Joined: 16 Jul 2009
Posts: 1628
Schools: CBS
WE 1: 4 years (Consulting)
Followers: 42

Kudos [?]: 1057 [0], given: 2

Some plants have extremely sensitive biological [#permalink]

### Show Tags

26 Sep 2010, 09:27
00:00

Difficulty:

(N/A)

Question Stats:

35% (02:49) correct 65% (01:48) wrong based on 24 sessions

### HideShow timer Statistics

Some plants have extremely sensitive biological thermometers. For example, the leaves of rhododendrons curl when the temperature of the air around them is below 0℃(Celsius). Similarly, mature crocus blossoms open in temperatures above 2℃. So someone who simultaneously observed rhododendrons with uncurled leaves, crocuses with mature but unopened blossoms, and a thermometer showing 1℃ could determine that the thermometer’s reading was accurate to within plus or minus 1℃.
Which one of the following, if true, most seriously undermines the reasoning above?
(A) Neither rhododendrons nor crocuses bloom for more than a few weeks each year, and the blossoms of rhododendrons growing in any area do not appear until at least several weeks after crocuses growing in that area have ceased to bloom.
(B) Many people find it unpleasant to be outdoors for long periods when the temperature is at or about 1℃.
(C) The climate and soil conditions that favor the growth of rhododendrons are also favorable to the growth of crocuses.
(D) Air temperature surrounding rhododendrons, which can grow 12 feet tall, is likely to differ from air temperature surrounding crocuses, which are normally only a few inches high, by more than 1℃, even if the two plants are growing side by side.
(E) Certain types of thermometers that are commonly used to measure outdoor temperatures can be extremely accurate in moderate temperature ranges but much less accurate in warmer or colder temperature range.
_________________

The sky is the limit
800 is the limit

GMAT Club Premium Membership - big benefits and savings

If you have any questions
New!
Manager
Joined: 15 Apr 2010
Posts: 176
Followers: 3

Kudos [?]: 86 [0], given: 25

### Show Tags

26 Sep 2010, 10:55
I think D is the correct answer.
_________________

Give [highlight]KUDOS [/highlight] if you like my post.

Always do things which make you feel ALIVE!!!

Manager
Joined: 22 Aug 2008
Posts: 186
Followers: 5

Kudos [?]: 88 [0], given: 11

### Show Tags

27 Sep 2010, 01:06
stimulus
the leaves of rhododendrons curl when the temperature of the air around them is below 0℃(Celsius).
mature crocus blossoms open in temperatures above 2℃

conclusion
Someone who simultaneously observed rhododendrons with uncurled leaves, crocuses with mature but unopened blossoms, and a thermometer showing 1℃ could determine that the thermometer’s reading was accurate to within plus or minus 1℃.

to weaken the conclusion we have to show that the temperature shown by the thermometer is not accurate
D correctly points out that the surrounding temp of rhododendrons can differ from the surrounding temp of crocuses by more than 1℃.
Senior Manager
Joined: 16 Apr 2006
Posts: 276
Followers: 2

Kudos [?]: 181 [0], given: 2

### Show Tags

27 Sep 2010, 03:27
IMO A.
_________________

Trying hard to achieve something unachievable now....

Manager
Status: Will Retake GMAT
Joined: 29 Jul 2010
Posts: 137
Location: India
Concentration: General Management, Entrepreneurship
Schools: Stanford '13 (D)
GPA: 3.11
WE: Information Technology (Computer Software)
Followers: 3

Kudos [?]: 15 [0], given: 28

### Show Tags

27 Sep 2010, 06:25
The answer should be D. It cannot be A as in that, they are talking about blooming of rhododendrons which is not the case. Whether they bloom or not, the leaves will be present when the crocuses bloom.
_________________

Re-taking GMAT. Hope the charm works this time..

Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1712
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Followers: 97

Kudos [?]: 913 [0], given: 109

### Show Tags

27 Sep 2010, 07:39
+1 D
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Manager
Joined: 22 Jun 2010
Posts: 212
Followers: 1

Kudos [?]: 110 [0], given: 13

### Show Tags

27 Sep 2010, 08:57
I went for D, what's the OA?
Director
Joined: 13 Aug 2009
Posts: 537
Followers: 11

Kudos [?]: 68 [0], given: 46

### Show Tags

27 Sep 2010, 11:18
What is the OA? I am going with D. Observing those two plants or whatever cannot determine whether or not the thermeter is accurate since the temperature surrounding those observations IS LIKELY (stated in the stimulus) to be different. metallica, thanks for the explanation.
_________________

It's a dawg eat dawg world.

Senior Manager
Joined: 06 Jun 2009
Posts: 333
Location: USA
WE 1: Engineering
Followers: 1

Kudos [?]: 75 [0], given: 0

### Show Tags

27 Sep 2010, 11:38
Maybe true, but out of scope (A) Neither rhododendrons nor crocuses bloom for more than a few weeks each year, and the blossoms of rhododendrons growing in any area do not appear until at least several weeks after crocuses growing in that area have ceased to bloom.

Irrelevant (B) Many people find it unpleasant to be outdoors for long periods when the temperature is at or about 1℃.

Irrelevant (C) The climate and soil conditions that favor the growth of rhododendrons are also favorable to the growth of crocuses.

Correct. The height difference between the 2 can definitely result in different temperatures that they are exposed to. The only way that makes any sense to undermine the statement (D) Air temperature surrounding rhododendrons, which can grow 12 feet tall, is likely to differ from air temperature surrounding crocuses, which are normally only a few inches high, by more than 1℃, even if the two plants are growing side by side.

Maybe true, but irrelevant (E) Certain types of thermometers that are commonly used to measure outdoor temperatures can be extremely accurate in moderate temperature ranges but much less accurate in warmer or colder temperature range.
_________________

All things are possible to those who believe.

Manager
Joined: 04 May 2009
Posts: 67
Location: Astoria, NYC
Followers: 1

Kudos [?]: 10 [0], given: 1

### Show Tags

27 Sep 2010, 17:06
it has to be D....the closest Answer (A) Neither rhododendrons nor crocuses bloom for more than a few weeks each year, and the blossoms of rhododendrons growing in any area do not appear until at least several weeks after crocuses growing in that area have ceased to bloom.
We are dealing with the rhododendrons curling not the blossoms. Totally out of scope...what is OA?
Manager
Joined: 27 May 2010
Posts: 102
Followers: 2

Kudos [?]: 6 [0], given: 13

### Show Tags

28 Sep 2010, 10:21
D
Senior Manager
Affiliations: Volunteer Operation Smile India, Creative Head of College IEEE branch (2009-10), Chief Editor College Magazine (2009), Finance Head College Magazine (2008)
Joined: 25 Jul 2010
Posts: 471
Location: India
WE2: Entrepreneur (E-commerce - The Laptop Skin Vault)
Concentration: Marketing, Entrepreneurship
GMAT 1: 710 Q49 V38
WE: Marketing (Other)
Followers: 13

Kudos [?]: 145 [0], given: 24

### Show Tags

29 Sep 2010, 09:30
I'll go for D

noboru wrote:
Some plants have extremely sensitive biological thermometers. For example, the leaves of rhododendrons curl when the temperature of the air around them is below 0℃(Celsius). Similarly, mature crocus blossoms open in temperatures above 2℃. So someone who simultaneously observed rhododendrons with uncurled leaves, crocuses with mature but unopened blossoms, and a thermometer showing 1℃ could determine that the thermometer’s reading was accurate to within plus or minus 1℃.
Which one of the following, if true, most seriously undermines the reasoning above?
(A) Neither rhododendrons nor crocuses bloom for more than a few weeks each year, and the blossoms of rhododendrons growing in any area do not appear until at least several weeks after crocuses growing in that area have ceased to bloom. The question states that they are in bloom so this is out
(B) Many people find it unpleasant to be outdoors for long periods when the temperature is at or about 1℃. Has nothing to do with what the question is asking
(C) The climate and soil conditions that favor the growth of rhododendrons are also favorable to the growth of crocuses. Again nothing to do with the temperature
(D) Air temperature surrounding rhododendrons, which can grow 12 feet tall, is likely to differ from air temperature surrounding crocuses, which are normally only a few inches high, by more than 1℃, even if the two plants are growing side by side. CORRECT since it explains how the temp could vary more than 1℃
(E) Certain types of thermometers that are commonly used to measure outdoor temperatures can be extremely accurate in moderate temperature ranges but much less accurate in warmer or colder temperature range. Again does not answer any part of the question. Irrelevant

_________________

Kidchaos

http://www.laptopskinvault.com

Follow The Laptop Skin Vault on:

Consider Kudos if you think the Post is good
Unless someone like you cares a whole awful lot. Nothing is going to change. It's not. - Dr. Seuss

Senior Manager
Joined: 25 Feb 2010
Posts: 481
Followers: 4

Kudos [?]: 84 [0], given: 10

### Show Tags

29 Sep 2010, 12:54
Can you share the OA please?
_________________

GGG (Gym / GMAT / Girl) -- Be Serious

Its your duty to post OA afterwards; some one must be waiting for that...

Senior Manager
Joined: 06 Jun 2009
Posts: 333
Location: USA
WE 1: Engineering
Followers: 1

Kudos [?]: 75 [0], given: 0

### Show Tags

29 Sep 2010, 14:17
Quote:
Its your duty to post OA afterwards; some one must be waiting for that...

_________________

All things are possible to those who believe.

Intern
Joined: 31 Mar 2010
Posts: 2
Followers: 0

Kudos [?]: 1 [1] , given: 1

### Show Tags

29 Sep 2010, 15:29
1
KUDOS
+1 D
Manager
Joined: 25 Jul 2010
Posts: 175
WE 1: 4 years Software Product Development
WE 2: 3 years ERP Consulting
Followers: 7

Kudos [?]: 50 [0], given: 15

### Show Tags

03 Oct 2010, 14:43
D for me.
_________________

Manager
Joined: 25 Jul 2010
Posts: 175
WE 1: 4 years Software Product Development
WE 2: 3 years ERP Consulting
Followers: 7

Kudos [?]: 50 [0], given: 15

### Show Tags

03 Oct 2010, 14:47
Somebody in 2005 on other forum said the OA is D.
_________________

Re: sensitive biological thermometers   [#permalink] 03 Oct 2010, 14:47
Similar topics Replies Last post
Similar
Topics:
Some of Company X's manufacturing plants 0 13 Oct 2016, 06:42
3 because plants have more nutrients 2 07 Oct 2014, 14:27
1 Some statisticians believe that the method called extreme 3 10 Nov 2011, 10:26
4 Biological functions of many plants and animals vary in 16 18 Jul 2008, 00:33
Some plants have extremely sensitive biological 4 08 Feb 2008, 06:10
Display posts from previous: Sort by