Tough one from Kaplan

This topic has expert replies
Junior | Next Rank: 30 Posts
Posts: 21
Joined: 04 May 2010
Thanked: 4 times

Tough one from Kaplan

by yuliawati » Thu Nov 04, 2010 3:00 am
I can eliminate the 4 wrong answers, but I cannot find any relevant evidence on the passage to support the OA.
Any idea???

Careful observers of wildlife along unspoiled freshwater shorelines in New england may encounter the river otter (Lutra Canadensis) or its close cousin, the mink (Mustela Vison). Like other members of the Mustelidae, or "weasel" family, these animals have elongated bodies with long tails and are efficient hunters. On land, they commonly employ the 2-2 bounding gait characteristics of Mustelidae, but as the only semi- aquatic members of the family in the northeast, they are also accomplished swimmers. Both sprot rich, dark fur insulating them from the wet and cold.
Despite such similarities, however, the otter and mink are readily distinguished by sight. The otter is almost twice as long as the mink and may boast ten times of the weight of the smaller animal. THe rudder-like tail of the otter is markedly heavy-set, tapering only gradually, while that of the mink is gracile. Other, less obvious, differences exist. For example, the otter subsists largely on fish and occasional small mammals, whereas the mink prefers rodents, especially the aquatic muskrat. Similarly, although both animals give birth in the spring, the mink mates in midwinter; the otter mates in spring immediately folloing the birth, taking advantage of a curious adaptation, delayed implantation of the fertilized egg until the following year. Such variations reflect the fact that even "cousins" traverse different evalutionary pathways.

The passage suggests that Mustela Vison
A. is a less important member of Mustelidae than lutra canadensis
B. consumes smaller pray than Lutra candensis
C. may be disturbed by the impact of human activity on the environment
d. has evolved delayed implantation of fertilized eggs
e. is the most gracile of the Mustelidae

OA: C

User avatar
GMAT Instructor
Posts: 578
Joined: 25 Aug 2009
Thanked: 136 times
Followed by:62 members

by KapTeacherEli » Thu Nov 04, 2010 7:41 pm
Hi yuliawati,

This is definitely a tricky one. However, take a look at that very first sentence--"Careful observers along unspoiled freshwater shorelines...". This suggests that spoiled coastlines--ones impacted by human settlement--might not be home to these mustelids.

Hope this helps!

Eli
Eli Meyer
Kaplan GMAT Teacher
Cambridge, MA
www.kaptest.com/gmat

ImageImageImage

Senior | Next Rank: 100 Posts
Posts: 57
Joined: 06 Jul 2008
Thanked: 1 times
GMAT Score:640

by iikarthik » Thu Nov 04, 2010 9:16 pm
KapTeacherEli wrote:Hi yuliawati,

This is definitely a tricky one. However, take a look at that very first sentence--"Careful observers along unspoiled freshwater shorelines...". This suggests that spoiled coastlines--ones impacted by human settlement--might not be home to these mustelids.

Hope this helps!

Eli
Hi Eli,

Why isnt option D an answer choice?

pls explain.

Thanks
karthik

Junior | Next Rank: 30 Posts
Posts: 21
Joined: 04 May 2010
Thanked: 4 times

by yuliawati » Thu Nov 04, 2010 10:41 pm
Thanks Eli, it does make sense. I missed the point.
D isnt the correct answer because the passage states that "the otter mates (not the mink)....., delayed implantation of the fertilized egg".

Senior | Next Rank: 100 Posts
Posts: 57
Joined: 06 Jul 2008
Thanked: 1 times
GMAT Score:640

by iikarthik » Fri Nov 05, 2010 1:45 am
yuliawati wrote:Thanks Eli, it does make sense. I missed the point.
D isnt the correct answer because the passage states that "the otter mates (not the mink)....., delayed implantation of the fertilized egg".
Thanks

Legendary Member
Posts: 537
Joined: 22 Jan 2010
Thanked: 14 times
Followed by:1 members

by frank1 » Sun Nov 07, 2010 8:54 am
To be frank all 5 options seem to be bad for me...
I was left with C as it was ...may be less bad

A)There is no such indication:Out of scope
B)the otter subsists largely on fish and occasional small mammals, whereas the mink prefers rodents, especially the aquatic muskrat.
There is nothing about size of prey.
and we dont know size of aquatic muskrat as well.
(we can provide logic for it if we start digging reasons for it... occasional small means most of the time it feeds on large preys and where as shows contradiction...)

C.seems to be good,not because of first line but because other options are poor
Careful observers of wildlife along unspoiled freshwater shorelines.....
Does it prove or means that people will harm it?I think correct answer needs to be better than that.

D.Opposite

E.One word wrong or extreme....most...
GMAT score is equally counted as your GPA and 78 clicks can change you life.

Legendary Member
Posts: 1404
Joined: 20 May 2008
Thanked: 18 times
Followed by:2 members

by tanviet » Fri Jul 08, 2011 3:49 am
descriptive passages are not typical of gmat passages. The trick of gmat is not like this trick. Study of this passages and question is not good for gmat.

Legendary Member
Posts: 2330
Joined: 15 Jan 2010
Thanked: 56 times
Followed by:26 members

by mundasingh123 » Fri Jul 08, 2011 8:42 am
Is this a Kaplan CAT Question
I Seek Explanations Not Answers