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# Hydrocarbons, with which fruit flies perfume themselves in

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Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Oct 2009, 05:42
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Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.
A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of
B. and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of
C. which apparently assists flies that tastes the hydrocarbons on prospective mates in being able to distinguish their own species from
D. apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of
E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from
[Reveal] Spoiler: OA
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Oct 2009, 06:01
Only E or C could be correct.
IMO C, as it maintains the parallelism of the sentence. OA?
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Oct 2009, 06:03
IMO E too.

Hydrocarbons is the subject so the last part should refer to hydrocarbons rather than the "way in which fruit flies perfume". A, B and C out.

D=> "to assist" is not the intended meaning.
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Oct 2009, 06:07
OA is E.....

can anyone explain me...what is the difference between THOSE OF & THAT OF
i mean when to use these options
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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06 Oct 2009, 08:57
gurpreet07 wrote:
OA is E.....

can anyone explain me...what is the difference between THOSE OF & THAT OF
i mean when to use these options

"That of" is used to refer singular noun where as "those of" is used to refer plural noun. I am not sure though.
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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04 Jan 2011, 04:30
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noboru wrote:
Whats wrong with D?
thanks

Problem with D is "assisting flies to taste". This phrase changes the meaning of the whole sentence. The hydrocarbons assists in distinguishing the species and not assists in tasting which actually D mentions. E correctly mentions "assisting flies that taste the hydrocarbons.... in distinguishing....."
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Jul 2012, 07:50

gurpreet07 wrote:
Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.
A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of
B. and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of
C. which apparently assists flies that tastes the hydrocarbons on prospective mates in being able to distinguish their own species from
D. apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of
E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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05 Jul 2012, 08:31
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Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.

A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of

The 'this' is ambiguous and needs a noun immediately following it so we know what 'this' refers to. Also, 'own species from that of' is confusing. What does 'that' stand for? Should simply be 'their own species from other species', or using ellipsis, 'their own species from others.'

B. and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of

Same issue as (A).

C. which apparently assists flies that tastes the hydrocarbons on prospective mates in being able to distinguish their own species from

The use of 'which' incorrectly modifies 'courtship.' Also, 'in being able to...' is wordy.

D. apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

The idiom is 'assisting in Verb-ing'. Here it is 'assisting...to taste.'

E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

Use the correct idiom, 'assisting...in distinguishing.' Also, correctly compares species to species.

Hope that helps
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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01 Apr 2014, 13:30
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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08 May 2015, 04:59
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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20 Mar 2016, 04:48
Hi chetan2u . daagh /

I have a doubt in A and E.

Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important
in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish
their own species from that of others[/b
].

A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish [b]their own species from that of others
.
E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

OA- E.

First I eliinated A because of word "THIS" but in the end--> don't we need that/those..?

A. distinguish their own species from that of others. --> That = species

If we remove "that" then we are comparing ---> species (in A) and Others ...
According to me it should be-

and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own
species from species of

So, to refer back to species we need "THAT"

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Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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20 Mar 2016, 22:28
PrakharGMAT wrote:
Hi chetan2u . daagh /

I have a doubt in A and E.

Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important
in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish
their own species from that of others[/b
].

A. and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish [b]their own species from that of others
.
E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

OA- E.

First I eliinated A because of word "THIS" but in the end--> don't we need that/those..?

A. distinguish their own species from that of others. --> That = species

If we remove "that" then we are comparing ---> species (in A) and Others ...
According to me it should be-

and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own
species from species of

So, to refer back to species we need "THAT"

Hi,

I think ellipsis has come to play in choice E or else it would be redundant.

apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from others [' species]
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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22 Mar 2016, 11:17
Aves is right. "Others" here means "other species," so the word "that" is redundant or meaningless.
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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23 Mar 2016, 09:27
PrakharGMAT wrote:
If we remove "that" then we are comparing ---> species (in A) and Others ...
According to me it should be-

and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own
species from species of

So, to refer back to species we need "THAT"

Even if this is what the sentence is trying to say, it should use "those" and not "that" because clearly we are talking about many species.
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Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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17 Jun 2016, 06:45
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I worked hard to spend many hours for the GMAT preparation

or
I worked hard, spending hours for the GMAT preparation.

In the first sentence, to spend hours- is not my intention or purpose

In the second sentence, spending hours is the consequence of the hard work

So choice D is wrong for that reason
choice D says, hydrocarbon assisting flies to taste

the meaning of the sentence is hydrocarbon assist flies that taste it in distinguishing their species from others (species)
'those of others' has an issue; it should just be 'others' - it's clear that the intention is to refer to other species, not to something of other species).
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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21 Jun 2016, 10:02
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Careful, vijaisingh2001. "To," like most very common words, has a wide variety of meanings and uses. It can certainly be shorthand for "in order to," but that doesn't have to be our interpretation of D. For instance, "assisting the flies to taste" might mean "helping the flies taste." D still doesn't make sense, because then the hydrocarbons would be helping the flies to taste hydrocarbons, and the rest of the sentence wouldn't fit! Also, we don't generally use "to" with "assist." So D is certainly a mess, but you should avoid eliminating a choice because it doesn't conform to one particular possibility of usage for the word "to."
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Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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13 Sep 2016, 13:03
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assist flies in distinguishing their own species from those of the others.
Doesn't it mean distinguishing their own species from the species of other flies.

Wherever I read about this problem, explanation goes "others" stand for "other species|. And in "those of others" means "species of species" which is wrong.

But am I wrong when I say "those of others" means "species of other flies". In this question there were other issues which helped reach "E". But I am not able to comprehend that "others" v/s "those of others" split.

For example, Distinguish their own shoes from those of others. It means to distinguish their own shoes from shoes of other people. This sentence seems correct to me.
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Re: Hydrocarbons, with which fruit flies perfume themselves in [#permalink]

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14 Sep 2016, 21:53
Can "this" act as a noun in GMAT?
Re: Hydrocarbons, with which fruit flies perfume themselves in   [#permalink] 14 Sep 2016, 21:53
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