Find all School-related info fast with the new School-Specific MBA Forum

It is currently 18 Apr 2014, 16:06

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In order to withstand tidal currents, juvenile horseshoe

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
Joined: 06 Jan 2008
Posts: 560
Followers: 2

Kudos [?]: 71 [0], given: 2

GMAT Tests User
In order to withstand tidal currents, juvenile horseshoe [#permalink] New post 21 May 2008, 05:22
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 100% (00:00) wrong based on 1 sessions
In order to withstand tidal currents, juvenile horseshoe crabs frequently burrow in the
sand. Such burrowing discourages barnacles from clinging to their shells. When fully
grown, however, the crabs can readily withstand tidal currents without burrowing, and
thus they acquire substantial populations of barnacles. Surprisingly, in areas where tidal
currents are very weak, juvenile horseshoe crabs are found not to have significant
barnacle populations, even though they seldom burrow.
Which of the following, if true, most helps to explain the surprising finding?
A. Tidal currents do not themselves dislodge barnacles from the shells of horseshoe
crabs.
B. Barnacles most readily attach themselves to horseshoe crabs in areas where tidal
currents are weakest.
C. The strength of the tidal currents in a given location varies widely over the course
of a day.
D. A very large barnacle population can significantly decrease the ability of a
horseshoe crab to find food.
E. Until they are fully grown, horseshoe crabs shed their shells and grow new ones
several times a year.
Senior Manager
Senior Manager
User avatar
Joined: 14 Mar 2007
Posts: 319
Location: Hungary
Followers: 1

Kudos [?]: 16 [0], given: 3

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 21 May 2008, 06:03
May be E is correct. They shed their shell therefore barnacle cannot stick to their shell.
Director
Director
User avatar
Joined: 14 Oct 2007
Posts: 759
Location: Oxford
Schools: Oxford'10
Followers: 13

Kudos [?]: 169 [0], given: 8

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 21 May 2008, 15:21
Premise: In strong currents, young crabs burrow, and adult crabs dont need to
Premise: Barnacles do not attach to burrowed crabs
Premise: Adults therefore have barnacles attached
Premise: In weak currents, young crabs do not burrow, but Still do not have barnacles.

Questions is asking how can the last premise be true? (surprising finding)

Answer is E, since yound crabs keep getting rid of their shells, their shells do not have the barnacle buildup
Manager
Manager
Joined: 22 Dec 2007
Posts: 158
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 21 May 2008, 15:31
E for me.
Director
Director
Joined: 06 Jan 2008
Posts: 560
Followers: 2

Kudos [?]: 71 [0], given: 2

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 22 May 2008, 06:07
OA is E. Thanks :-D
Senior Manager
Senior Manager
Joined: 07 Jan 2008
Posts: 297
Followers: 1

Kudos [?]: 17 [0], given: 0

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 23 May 2008, 12:05
E. Until they are fully grown, horseshoe crabs shed their shells and grow new ones
several times a year.

E clearly explains why young ones do NOT have barnicles clinged to their shells!
CEO
CEO
User avatar
Joined: 17 May 2007
Posts: 2995
Followers: 52

Kudos [?]: 408 [0], given: 210

GMAT Tests User
Re: CR - tidal currents [#permalink] New post 25 May 2008, 03:31
Straight E - its the only one that helps explain the discrepancy.

saravalli wrote:
In order to withstand tidal currents, juvenile horseshoe crabs frequently burrow in the sand. Such burrowing discourages barnacles from clinging to their shells. When fully grown, however, the crabs can readily withstand tidal currents without burrowing, and thus they acquire substantial populations of barnacles. Surprisingly, in areas where tidal currents are very weak, juvenile horseshoe crabs are found not to have significant barnacle populations, even though they seldom burrow.

Which of the following, if true, most helps to explain the surprising finding?

A. Tidal currents do not themselves dislodge barnacles from the shells of horseshoe crabs.

B. Barnacles most readily attach themselves to horseshoe crabs in areas where tidal currents are weakest.

C. The strength of the tidal currents in a given location varies widely over the course of a day.

D. A very large barnacle population can significantly decrease the ability of a horseshoe crab to find food.

E. Until they are fully grown, horseshoe crabs shed their shells and grow new ones several times a year.

Intern
Intern
Joined: 17 Mar 2008
Posts: 18
Followers: 0

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

Re: CR - tidal currents [#permalink] New post 26 May 2008, 14:38
E for me. it is a straight forward one, which explains the discrepancy.
Manager
Manager
User avatar
Status: Dream big, work hard, and drink gallons of beer!
Joined: 11 Jun 2011
Posts: 213
Concentration: Finance, General Management
GMAT Date: 10-01-2011
WE: Web Development (Consulting)
Followers: 2

Kudos [?]: 9 [0], given: 33

Re: CR - tidal currents [#permalink] New post 30 Jul 2011, 17:00
Although E is the most obvious choice here. Aren't we assuming here that shedding only affects areas with week tidal waves but not the other areas with the strong tidal waves? That means when they were found with barnacle population in the areas with strong tidal waves, they did not shed during that time. But when they were found in weak tidal waves, they were already done with shedding.
_________________

If I look absent-minded or insane, I am just living a dream of being successful. If you still wonder why I am like this, you have no idea how success tastes like!

Re: CR - tidal currents   [#permalink] 30 Jul 2011, 17:00
    Similar topics Author Replies Last post
Similar
Topics:
New posts In order to withstand tidal currents, juvenile horseshoe RockGmat 5 03 Nov 2004, 15:47
New posts Q33: In order to withstand tidal currents, juvenile nakib77 8 14 Oct 2005, 12:32
New posts The tidal range at a particular location is the difference seofah 8 29 Jul 2007, 13:47
New posts ordering ritula 2 03 Feb 2009, 03:25
Popular new posts 6 In order to withstand tidal currents, juvenile horseshoe noboru 39 29 Jul 2010, 11:47
Display posts from previous: Sort by

In order to withstand tidal currents, juvenile horseshoe

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.