GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 25 Sep 2018, 20:03

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.

Close

Request Expert Reply

Confirm Cancel

Economist Tutor CAT IR Two-part Question

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Manager
Manager
User avatar
B
Joined: 03 Jan 2016
Posts: 106
Location: India
GMAT 1: 640 Q49 V29
GMAT 2: 760 Q51 V41
GPA: 3.2
Economist Tutor CAT IR Two-part Question  [#permalink]

Show Tags

New post 29 Jan 2017, 01:59
1
Marine biologist: While we have known that larger marine animals such as whales and dolphins communicate using sound, the fact that smaller marine animals also use sound is a relatively new discovery. These low-frequency sounds produced by animals in the mesopelagic zone--that area between 200 and 1,000 meters below the ocean surface--may be evidence that these smaller animals can communicate when it is time to feed. Understanding more about which marine populations use sound would lead to a better understanding of the ocean's ecosystem, including which animals feed on animals from the mesopelagic zone.

Indicate two different statements as follows: one statement identifies an assumption required by the marine biologist's argument and the other identifies a possible fact that, if true, would provide significant logical support for the required assumption. Make only two selections, one in each column.

Assumption Required / Possible Fact


1. The sound is about five decibels louder than the ocean's background noise.


2. Sound travels farther underwater than was first suspected.


3. The sound made by the smaller animals is a buzzing or humming that goes on for up to two hours.


4. Marine animals found in the mesopelagic zone must feed outside the zone.


5. Marine animals that once used chemical cues to indicate feeding times have been found to also use sound.


6. Marine animals producing sounds in the mesopelagic zone are only eaten by animals living outside of the zone.
Intern
Intern
avatar
S
Joined: 13 Dec 2016
Posts: 43
Re: Economist Tutor CAT IR Two-part Question  [#permalink]

Show Tags

New post 07 Feb 2017, 07:06
ZenYogi, Quite a tricky question. Can you please post the official answer ?
Manager
Manager
User avatar
B
Joined: 03 Jan 2016
Posts: 106
Location: India
GMAT 1: 640 Q49 V29
GMAT 2: 760 Q51 V41
GPA: 3.2
Re: Economist Tutor CAT IR Two-part Question  [#permalink]

Show Tags

New post 10 Apr 2017, 13:11
OA- 6/4
_________________

How ZenYogi got from 640 to 760
_________________

Trust yourself, you must

Your Kudos, I appreciate

Intern
Intern
avatar
Joined: 14 Sep 2017
Posts: 4
Re: Economist Tutor CAT IR Two-part Question  [#permalink]

Show Tags

New post 11 Feb 2018, 04:00
From The Economist GMAT explanation (not mine; hoping this will help others):

In order to solve this two-part Integrated Reasoning question, you are asked to find two things: a required assumption and a possible fact that provides logical support for this assumption. You know that it is necessary to find the assumption first, as the fact is dependent on it.

First, break down the argument to help you find the required assumption.

Premise 1: Animals in the mesopelagic zone communicate when it is time to feed using low-frequency sounds.

Premise 2 (possible fact that logically supports the assumption): __?
+
Required Assumption: __?
=
Conclusion: Understanding these sounds would lead to knowing which animals outside the zone feed on animals from the mesopelagic zone.

In order for the marine biologist to conclude that understanding the use of sound in marine animal communication could aid in knowing which animals outside the mesopelagic zone feed on those from the zone, then the required assumption is that these animals are only eaten by animals outside of the zone and not within it.

The possible fact that best supports this assumption is that the marine animals inside the mesopelagic zone must leave it in order to feed, thus exposing themselves to the other marine animals.
GMAT Club Bot
Re: Economist Tutor CAT IR Two-part Question &nbs [#permalink] 11 Feb 2018, 04:00
Display posts from previous: Sort by

Economist Tutor CAT IR Two-part Question

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: chetan2u, Bunuel

Events & Promotions

PREV
NEXT


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.