Last visit was: 15 Dec 2024, 03:47 It is currently 15 Dec 2024, 03:47
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
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 15 Dec 2024
Posts: 97,882
Own Kudos:
685,990
 []
Given Kudos: 88,273
Products:
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 97,882
Kudos: 685,990
 []
1
Kudos
Add Kudos
39
Bookmarks
Bookmark this Post
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 15 Dec 2024
Posts: 97,882
Own Kudos:
685,990
 []
Given Kudos: 88,273
Products:
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 97,882
Kudos: 685,990
 []
2
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
avatar
nguyenhoa89
Joined: 28 Sep 2011
Last visit: 10 Apr 2016
Posts: 3
Own Kudos:
3
 []
Given Kudos: 43
Posts: 3
Kudos: 3
 []
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
Jak5189
Joined: 16 Mar 2015
Last visit: 24 May 2017
Posts: 2
Own Kudos:
8
 []
Posts: 2
Kudos: 8
 []
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I think this is a poor-quality question and I don't agree with the explanation. Answer B cannot be correct. Answer choice B compares mammals to to the heart in reptiles.
avatar
tae808
Joined: 03 Dec 2013
Last visit: 21 Feb 2020
Posts: 50
Own Kudos:
Given Kudos: 11
Location: United States (HI)
GMAT 1: 660 Q49 V30
GPA: 3.56
GMAT 1: 660 Q49 V30
Posts: 50
Kudos: 53
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I think this is a poor-quality question and I don't agree with the explanation. It compares two different things: "mammals" and "the heart"
User avatar
sayantanc2k
Joined: 14 Dec 2013
Last visit: 09 Dec 2022
Posts: 2,397
Own Kudos:
15,377
 []
Given Kudos: 26
Location: Germany
Schools:
GMAT 1: 780 Q50 V47
WE:Corporate Finance (Pharmaceuticals and Biotech)
Expert reply
Schools:
GMAT 1: 780 Q50 V47
Posts: 2,397
Kudos: 15,377
 []
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
tae808
I think this is a poor-quality question and I don't agree with the explanation. It compares two different things: "mammals" and "the heart"

Jak5189
I think this is a poor-quality question and I don't agree with the explanation. Answer B cannot be correct. Answer choice B compares mammals to to the heart in reptiles.

No, your point is not correct. It is very clear that "the heart IN mammal" and " the heart IN reptiles" are compared. Putting "IN mammals" before "the heart" does not make "mammals" the first item being compared. Both of you have just fallen into a trap intentionally laid by the question writer.
avatar
Tadilliner
Joined: 28 Oct 2014
Last visit: 11 Apr 2018
Posts: 5
Own Kudos:
GPA: 3.85
Products:
Kudos
Add Kudos
Bookmarks
Bookmark this Post
My issue with the answer here does not arise from comparison (I think the placement of "in mammals the heart" vs "the heart in reptiles" is somewhat clear in meaning) but instead with subject/verb agreement.

B says "the heart... delivers oxygenated blood to the organs by one channel WHILE DIRECTS BLOOD to the lungs..."

This is clearly not correct in my opinion. If it said "and directs" it would make more sense because those are the two functions that the heart performs and "directs" is parallel with "delivers".

Anyone care to correct me here if my reasoning is incorrect?
User avatar
sayantanc2k
Joined: 14 Dec 2013
Last visit: 09 Dec 2022
Posts: 2,397
Own Kudos:
Given Kudos: 26
Location: Germany
Schools:
GMAT 1: 780 Q50 V47
WE:Corporate Finance (Pharmaceuticals and Biotech)
Expert reply
Schools:
GMAT 1: 780 Q50 V47
Posts: 2,397
Kudos: 15,377
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Tadilliner
My issue with the answer here does not arise from comparison (I think the placement of "in mammals the heart" vs "the heart in reptiles" is somewhat clear in meaning) but instead with subject/verb agreement.

B says "the heart... delivers oxygenated blood to the organs by one channel WHILE DIRECTS BLOOD to the lungs..."

This is clearly not correct in my opinion. If it said "and directs" it would make more sense because those are the two functions that the heart performs and "directs" is parallel with "delivers".

Anyone care to correct me here if my reasoning is incorrect?

"While" is a conjunction that is used to depict that two actions happen simultaneously. The sentence implies that the
"delivery of oxygenated blood to the organs" and "the directing of blood to the lungs for re-oxygenation" happens simultaneously. Therefore use of "while" is alright.
avatar
samarthgarg94
Joined: 30 May 2016
Last visit: 30 Jan 2017
Posts: 3
Given Kudos: 3
Posts: 3
Kudos: 0
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Whereas in mammals the heart has four chambers, two ventricles and two atria, and delivers oxygenated blood to the organs by one channel while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has three chambers, with two ventricles and only one atrium.

Is the usage of with correct here?
Please clarify.
Thanks.
avatar
kalian
Joined: 19 Sep 2014
Last visit: 31 Dec 2017
Posts: 3
Own Kudos:
Given Kudos: 143
Location: India
GMAT 1: 630 Q49 V27
Products:
GMAT 1: 630 Q49 V27
Posts: 3
Kudos: 1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Actually BC can be quickly shortlisted first.
But in c, ... the mammalian heart, consisting of four chambers, two ventricles and two atria, delivers oxygenated blood to the organs by one channel, while the other directs blood to the lungs for re-oxygenation, the reptilian heart has three chambers,

This is wrong... heart and value of heart are not parallel. This is corrected in B.

in mammals the heart has four chambers, two ventricles and two atria, and delivers oxygenated blood to the organs by one channel while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has three chambers,

Has and directs are verbs that are parallel.

Am i right in my thinking? experts plz comment.
User avatar
sayantanc2k
Joined: 14 Dec 2013
Last visit: 09 Dec 2022
Posts: 2,397
Own Kudos:
Given Kudos: 26
Location: Germany
Schools:
GMAT 1: 780 Q50 V47
WE:Corporate Finance (Pharmaceuticals and Biotech)
Expert reply
Schools:
GMAT 1: 780 Q50 V47
Posts: 2,397
Kudos: 15,377
Kudos
Add Kudos
Bookmarks
Bookmark this Post
kalian
Actually BC can be quickly shortlisted first.
But in c, ... the mammalian heart, consisting of four chambers, two ventricles and two atria, delivers oxygenated blood to the organs by one channel, while the other directs blood to the lungs for re-oxygenation, the reptilian heart has three chambers,

This is wrong... heart and value of heart are not parallel. This is corrected in B.

in mammals the heart has four chambers, two ventricles and two atria, and delivers oxygenated blood to the organs by one channel while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has three chambers,

Has and directs are verbs that are parallel.

Am i right in my thinking? experts plz comment.

It is not clear what you mean my "value of heart". Please elaborate.

The parallelism in the correct option B is not between "has" and "directs", but between "delivers" and "directs". The first "has" (The heart in mammals has) is parallel to the second "has" (The heart in reptiles has).

Option C is wrong because of wrong parallelism between "delivers" (The mammalian heart delivers) and "has" (The reptilian heart has). The OE elaborates this point further.
avatar
samarthgarg94
Joined: 30 May 2016
Last visit: 30 Jan 2017
Posts: 3
Given Kudos: 3
Posts: 3
Kudos: 0
Kudos
Add Kudos
Bookmarks
Bookmark this Post
samarthgarg94
Whereas in mammals the heart has four chambers, two ventricles and two atria, and delivers oxygenated blood to the organs by one channel while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has three chambers, with two ventricles and only one atrium.

Is the usage of with correct here?
Please clarify.
Thanks.



I agree. But the sentence in question has a slightly different structure.
Here, the ventricles are the chambers themselves.
I find the sentence analogous to:
I have 3 vehicles,with two cars and only one bicycle.

IS it right??
thanks.
User avatar
sayantanc2k
Joined: 14 Dec 2013
Last visit: 09 Dec 2022
Posts: 2,397
Own Kudos:
Given Kudos: 26
Location: Germany
Schools:
GMAT 1: 780 Q50 V47
WE:Corporate Finance (Pharmaceuticals and Biotech)
Expert reply
Schools:
GMAT 1: 780 Q50 V47
Posts: 2,397
Kudos: 15,377
Kudos
Add Kudos
Bookmarks
Bookmark this Post
samarthgarg94
sayantanc2k
samarthgarg94
Whereas in mammals the heart has four chambers, two ventricles and two atria, and delivers oxygenated blood to the organs by one channel while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has three chambers, with two ventricles and only one atrium.

Is the usage of with correct here?
Please clarify.
Thanks.

Yes, it is alright. Compare with the following example:
I have a striped shirt with one pocket and six buttons.

I agree. But the sentence in question has a slightly different structure.
Here, the ventricles are the chambers themselves.
I find the sentence analogous to:
I have 3 vehicles,with two cars and only one bicycle.

IS it right??
thanks.

You are right - the usage given in option B (and the example you pointed out) is incorrect - the preposition "with" should not be there. We have modified the question to take care of this issue.

Thank you for your inputs.
avatar
pinkbunny
Joined: 15 Nov 2017
Last visit: 12 Jan 2019
Posts: 2
Own Kudos:
Given Kudos: 1
Location: United States
GMAT 1: 780 Q50 V48
GPA: 3.5
GMAT 1: 780 Q50 V48
Posts: 2
Kudos: 1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I agree that this is a low quality question. When you remove the superfluous details of the sentence it becomes clear that the 'correct' answer B is grammatically incorrect.

Whereas in mammals the heart has X, ..., and delivers Y while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has Z.

Should be while directing blood.
User avatar
GMATCoachBen
Joined: 21 Mar 2017
Last visit: 14 Dec 2024
Posts: 424
Own Kudos:
Given Kudos: 205
Status:Professional GMAT Trainer
Affiliations: GMAT Coach
Location: United States (WA)
GMAT 1: 760 Q50 V44
GMAT 2: 770 Q51 V44
GMAT 3: 770 Q50 V44
GMAT 4: 770 Q50 V45 (Online)
GMAT 5: 780 Q51 V48
Products:
Expert reply
GMAT 5: 780 Q51 V48
Posts: 424
Kudos: 1,698
Kudos
Add Kudos
Bookmarks
Bookmark this Post
pinkbunny
I agree that this is a low quality question. When you remove the superfluous details of the sentence it becomes clear that the 'correct' answer B is grammatically incorrect.

Whereas in mammals the heart has X, ..., and delivers Y while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has Z.

Should be while directing blood.

pinkbunny Thanks, I agree. A key strategy, as you say, is to remove the superfluous modifiers. This "while" structure requires "verb-ing" after. As another example below, which would we say?

A) "He studies while wait."
B) "He studies while waiting."
User avatar
sayantanc2k
Joined: 14 Dec 2013
Last visit: 09 Dec 2022
Posts: 2,397
Own Kudos:
15,377
 []
Given Kudos: 26
Location: Germany
Schools:
GMAT 1: 780 Q50 V47
WE:Corporate Finance (Pharmaceuticals and Biotech)
Expert reply
Schools:
GMAT 1: 780 Q50 V47
Posts: 2,397
Kudos: 15,377
 []
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
pinkbunny
I agree that this is a low quality question. When you remove the superfluous details of the sentence it becomes clear that the 'correct' answer B is grammatically incorrect.

Whereas in mammals the heart has X, ..., and delivers Y while directs blood to the lungs for re-oxygenation by another, the heart in reptiles has Z.

Should be while directing blood.

I think the confusion arises because of two different uses of "while":

Usage 1: "While" to depict two continuous events occuring at the same time:
Correct: I listen to music while doing maths.
Here "while" does not necessarily need parallelism. Hence "listen" (verb) and "doing" (present participle) need not necessarily be parrallel.


Usage 2: "While" as a contrast marker (without reference to time)
Correct: I like cricket while dislike baseball.

Here "while" needs pallellism. Hence "like" (verb) and "dislike" (verb) must be parralel.
Wrong: I like cricket while disliking baseball. (parallelism violated)
Moderators:
Math Expert
97881 posts
Founder
39369 posts