It is currently 19 Sep 2017, 13:55

### 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

# In order to withstand tidal currents, juvenile horseshoe

Author Message
Intern
Joined: 03 Nov 2004
Posts: 6

Kudos [?]: 32 [0], given: 0

In order to withstand tidal currents, juvenile horseshoe [#permalink]

### Show Tags

03 Nov 2004, 16:47
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

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.

Which one between C and E ?

Kudos [?]: 32 [0], given: 0

Manager
Joined: 21 Jul 2004
Posts: 120

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

### Show Tags

03 Nov 2004, 17:47
I would go w/ E....

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

SVP
Joined: 30 Oct 2003
Posts: 1788

Kudos [?]: 108 [0], given: 0

Location: NewJersey USA

### Show Tags

03 Nov 2004, 18:49
Obviously (E)

When the crabs are observed assuming majority of them were hatched from eggs at approximately same time. They should be shedding their sheels at almost the same time and any attached barnacle should be detached in the process or shedding the old shell.

Kudos [?]: 108 [0], given: 0

Manager
Joined: 18 Sep 2004
Posts: 151

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

Location: Dallas, TX

### Show Tags

03 Nov 2004, 23:58
Also got E, they only choice that would explain this finding. If the crabs shed their shells then barnicles attached to the old shell will be shed, as the crab grows a new shell.

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

Intern
Joined: 03 Aug 2004
Posts: 45

Kudos [?]: 18 [0], given: 0

### Show Tags

19 Nov 2004, 17:44
wasnt the contrast between

crabs having barnacles in high tides
v/s
crabs having barnacles in low tides

i am not clear as to how point E gives the right solution ... i am surely missing something

Kudos [?]: 18 [0], given: 0

Intern
Joined: 10 Nov 2004
Posts: 18

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

### Show Tags

20 Nov 2004, 08:50
E for me too..

Can't be C becoz, it doesn't say anywhere that strong tides wash the barnacles away, it simpy says that stong tides make them burrow. But in the weak tide situation, the crabs don't burrow, so tide couldn't have had any effect on the barnacles

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

20 Nov 2004, 08:50
Similar topics Replies Last post
Similar
Topics:
1 In order to ensure a successful vote on the issue of 10 14 Sep 2010, 06:15
In order to ease the traffic congestion, the transport 1 02 Sep 2009, 00:25
In order to determine automobile insurance premiums for a 6 10 Apr 2008, 18:05
In order to keep the competitive edge 0 05 May 2015, 03:49
In order to withstand tidal currents, juvenile horseshoe 8 30 Jul 2011, 18:00
Display posts from previous: Sort by