Last visit was: 19 Nov 2025, 00:44 It is currently 19 Nov 2025, 00:44
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
pallavi79us
User avatar
Current Student
Joined: 03 Jun 2008
Last visit: 02 Jan 2010
Posts: 29
Own Kudos:
39
 [37]
Concentration: Healthcare
Schools:Wharton Class of 2011
Posts: 29
Kudos: 39
 [37]
3
Kudos
Add Kudos
34
Bookmarks
Bookmark this Post
User avatar
grepro
Joined: 12 May 2006
Last visit: 13 Oct 2008
Posts: 84
Own Kudos:
145
 [3]
Posts: 84
Kudos: 145
 [3]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
maratikus
Joined: 01 Jan 2008
Last visit: 22 Jul 2010
Posts: 257
Own Kudos:
342
 [1]
Given Kudos: 1
Posts: 257
Kudos: 342
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
anandsebastin
Joined: 23 Jun 2005
Last visit: 20 Jul 2011
Posts: 339
Own Kudos:
356
 [1]
Given Kudos: 1
GMAT 1: 740 Q48 V42
GMAT 1: 740 Q48 V42
Posts: 339
Kudos: 356
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
The first segment of the statement mentions the color-discriminating apparatus of the human eye. So, the second segment should also mention a part of the insects' eye. Only then would the comparison be appropriate.
In B, you will be comparing avocado seeds to avocadoes :lol:
"that of an insect's eye" correctly compares the color-discriminating apparatuses. Hence D is correct

-Anand
User avatar
pallavi79us
User avatar
Current Student
Joined: 03 Jun 2008
Last visit: 02 Jan 2010
Posts: 29
Own Kudos:
Concentration: Healthcare
Schools:Wharton Class of 2011
Posts: 29
Kudos: 39
Kudos
Add Kudos
Bookmarks
Bookmark this Post
thanks for all the comments. The correct answer is D.
User avatar
judokan
Joined: 19 Mar 2008
Last visit: 04 Nov 2008
Posts: 203
Own Kudos:
243
 [1]
Posts: 203
Kudos: 243
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
pallavi79us
487. Like the color-discriminating apparatus of the human eye, insects’ eyes depend on recording and comparing light intensities in three regions of the electromagnetic spectrum.
(A) insects’ eyes depend on
(B) an insect eye depends on
(C) that of insects depend on the
(D) that of an insect’s eye depends on
(E) that of an insect’s is dependent on the


why B is not correct. Please explain. .

Thanks

C) is out, Subject verb agreement. Depends should replace depend
A) B) are wrong, it is compareing the color-discriminating apparatus to the insets' eye
E) is wordy, "the" is not correct.

Ans is D
User avatar
spriya
Joined: 17 Jun 2008
Last visit: 18 Nov 2010
Posts: 617
Own Kudos:
3,059
 [2]
Posts: 617
Kudos: 3,059
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Like the color-discriminating apparatus of the human eye, insects’ eyes depend on recording and comparing light intensities in three regions of the electromagnetic spectrum.

(A) insects’ eyes depend on -> compare apparatus of human eye with that of insects' and not insects' eye itself.-> eliminate
(B) an insect eye depends on -> eliminate -> same reason as above
(C) that of insects depend on the -> the is misleading .Apparatus of insect eyes and not insects.eliminate
(D) that of an insect’s eye depends on ->CORRECT
(E) that of an insect’s is dependent on the -> the is misleadig again.eliminate

IMO (D) answer please ......... :)
User avatar
vishy007
Joined: 20 Mar 2008
Last visit: 08 May 2009
Posts: 87
Own Kudos:
Location: USA
Posts: 87
Kudos: 616
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Original sentence has following issues

1) comparing apparatus with insects' eyes
2) depend is plural but the verb required is singular

D corrects both these problems
User avatar
seekmba
Joined: 17 Feb 2010
Last visit: 25 Sep 2014
Posts: 626
Own Kudos:
Given Kudos: 6
Posts: 626
Kudos: 3,603
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Like the color-discriminating apparatus of the human eye, insects’ eyes depend on recording and comparing light intensities in three regions of the electromagnetic spectrum.

(A) insects’ eyes depend on - wrong comparison
(B) an insect eye depends on - wrong comparison
(C) that of insects depend on the - 'insects' what???
(D) that [the color-discriminating apparatus] of an insect’s eye depends on - correct
(E) that of an insect’s is dependent on the - 'insects's' what???
User avatar
PTK
Joined: 02 Jul 2009
Last visit: 06 Oct 2022
Posts: 1,138
Own Kudos:
Given Kudos: 622
Status:mission completed!
GPA: 3.77
Products:
Posts: 1,138
Kudos: 2,206
Kudos
Add Kudos
Bookmarks
Bookmark this Post
D for me as well
aparatus must be compared to aparatus.
User avatar
schandok
Joined: 17 Feb 2011
Last visit: 08 Mar 2012
Posts: 44
Own Kudos:
Given Kudos: 25
Posts: 44
Kudos: 15
Kudos
Add Kudos
Bookmarks
Bookmark this Post
isn't "that of a X's" wrong?? at the least as per MGMAT SC guide?
User avatar
abhi47
Joined: 17 Sep 2011
Last visit: 18 Jul 2012
Posts: 101
Own Kudos:
Given Kudos: 8
Posts: 101
Kudos: 507
Kudos
Add Kudos
Bookmarks
Bookmark this Post
D is the correct answer as it correctly compares color-discriminating apparatus of the human eye and insect's eye.
User avatar
crick20002002
Joined: 29 Aug 2010
Last visit: 05 Oct 2012
Posts: 285
Own Kudos:
561
 [1]
Given Kudos: 37
Status:Prep started for the n-th time
Posts: 285
Kudos: 561
 [1]
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
schandok
isn't "that of a X's" wrong?? at the least as per MGMAT SC guide?

You are correct, that of X's is wrong.

But in the problem at hand we are essentially saying

the color-discriminating apparatus of eye of the insect. (insect's is modifying eye).

The following usage would be incorrect:

that of the eye's

Crick
User avatar
Sarang
Joined: 01 Nov 2010
Last visit: 11 Jul 2012
Posts: 81
Own Kudos:
Given Kudos: 20
Location: Zürich, Switzerland
Posts: 81
Kudos: 267
Kudos
Add Kudos
Bookmarks
Bookmark this Post
IMO answer D.
Apparatus of human eye should get compared with that of insect's.
User avatar
vdbhamare
Joined: 28 Apr 2011
Last visit: 15 Apr 2016
Posts: 66
Own Kudos:
Given Kudos: 6
Posts: 66
Kudos: 29
Kudos
Add Kudos
Bookmarks
Bookmark this Post
d for me............but i feel use of like is not proper
avatar
fozzzy
Joined: 29 Nov 2012
Last visit: 17 May 2015
Posts: 574
Own Kudos:
Given Kudos: 543
Posts: 574
Kudos: 6,801
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Like the color-discriminating apparatus of the human eye

"That" refers to the color-discriminating apparatus So A and B are out

C has insects we need to compare human eye and insect eye

D is correct

Can anyone explain Option E is it incorrect cos it changes the intended meaning of the sentence?
User avatar
Zarrolou
Joined: 02 Sep 2012
Last visit: 11 Dec 2013
Posts: 846
Own Kudos:
5,145
 [4]
Given Kudos: 219
Status:Far, far away!
Location: Italy
Concentration: Finance, Entrepreneurship
GPA: 3.8
Posts: 846
Kudos: 5,145
 [4]
2
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
fozzzy
Like the color-discriminating apparatus of the human eye

"That" refers to the color-discriminating apparatus So A and B are out

C has insects we need to compare human eye and insect eye

D is correct

Can anyone explain Option E is it incorrect cos it changes the intended meaning of the sentence?

Like the color-discriminating apparatus of the human eye, insects’ eyes depend on recording and comparing light intensities in three regions of the electromagnetic spectrum.

(E) that of an insect’s is dependent on the

E is incorrect because you cannot say " that of an insect’s": it's a "double" possessive. You can say (generally speaking) " that of an insect" or "insect's" to express possession, but you cannot use both. Moreover "That" should point to "apparatus " and E looks like this:
(E) that(apparatus) of an insect’s is dependent on the you want to compare the apparatus of the eye (not of the insect in general).
Example: you want to compare the size of the moon to something, you can say "like that of the moon" or "like the moon's": "like that of the moon's" is incorrect.

D)that of an insect’s eye == that of an eye of an insect. Here the double possessive is fine because the last one (insect’s) refers to the eye, where in E(and in my example) both forms pointed to the same thing.

Hope it's clear
User avatar
zazoz
Joined: 20 Nov 2011
Last visit: 21 Sep 2019
Posts: 26
Own Kudos:
Given Kudos: 17
Posts: 26
Kudos: 17
Kudos
Add Kudos
Bookmarks
Bookmark this Post
pallavi79us
487. Like the color-discriminating apparatus of the human eye, insects’ eyes depend on recording and comparing light intensities in three regions of the electromagnetic spectrum.
(A) insects’ eyes depend on
(B) an insect eye depends on
(C) that of insects depend on the
(D) that of an insect’s eye depends on
(E) that of an insect’s is dependent on the

why B is not correct. Please explain. .

Thanks

Hi guys,

lets examine each choice independently:

A) This choice incorrectly compared "color-discriminating apparatus of the human eye" with the "insects eye". Incorrect
B) Like the prevoius choice, B is also incorrect
C) In this choice 'that' is correctly used [ That= color-discriminating apparatus ] but we need color-discriminating apparatus of insect's eys not insect itself!. So cross off C
D) Everything looks fine and the comparison is logical. Big contender!
E) This choice used double possesive. For sure no one likes double possesive ;) so it's incorrect and ilogical.

So Pick D

Happy days!
avatar
aryabhatta
Joined: 26 Sep 2012
Last visit: 20 Feb 2020
Posts: 8
Own Kudos:
Given Kudos: 7
Location: United States
GMAT Date: 06-27-2014
GPA: 3.2
Posts: 8
Kudos: 9
Kudos
Add Kudos
Bookmarks
Bookmark this Post
First I also chose B, but by going through the explanations, D is the correct ans. Good question.
User avatar
AmritaSarkar89
Joined: 22 Feb 2016
Last visit: 02 Jul 2025
Posts: 64
Own Kudos:
Given Kudos: 208
Location: India
Concentration: Economics, Healthcare
GMAT 1: 690 Q42 V47
GMAT 2: 710 Q47 V39
GPA: 3.57
GMAT 2: 710 Q47 V39
Posts: 64
Kudos: 52
Kudos
Add Kudos
Bookmarks
Bookmark this Post
The trick in this question is that human eye is not being compared with the insects eye, it is rather a certain feature capable of doing something is being compared with the insects eye.

So in order to make the correct comparision we need to compare both the features. Although I was initially tempted with A the Correct answer is D which compared the feature of human eye with insects eye and also has correct subject verb agreement.
 1   2   
Moderators:
GMAT Club Verbal Expert
7445 posts
GMAT Club Verbal Expert
234 posts
188 posts