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Hydrocarbons, with which fruit flies perfume themselves in species-spe

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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 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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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 13 Sep 2016, 13:03
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 species-spe  [#permalink]

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

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New post 14 Nov 2016, 07:24
Hi experts. I get confused with the usage of this.Where will we use it n where not? Will really of good help if somebody explain

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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 28 Nov 2016, 23:16
The pronoun "this" isn't inherently wrong, but as ChrisLele notes above, its meaning isn't made clear here. We often use "this" in everyday speech in ways that rely on context. The most common example is "What's this?" To understand my question, you'd have to know what I was looking at, holding, or pointing to. On the GMAT, we will generally need additional language to make the meaning clear. Take a look at two examples of "this" used correctly:

Paolo runs at least five miles a day, even when he is tired or ill, and it is this discipline that has earned him the respect of his peers.

Here, "this" is clarified as referring to discipline. What discipline? The discipline that he displays by running every day.

We have been told that the facility is safe, but everybody knows this is a lie.

What is a lie? There's only one candidate here: the statement that the facility is safe.

By contrast, the use of "this" in A and B is much less clear. Does it refer back to a single noun ("courtship")? Maybe not, but then it needs to stand in for a larger concept, as in the instances above. But is that concept the use of hydrocarbons as perfume, or the fact that this use is important in courtship? The sentence is just too hard to interpret in this form! (In that last sentence, "this form" means "the form we're discussing in A and B." ;) )
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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 29 Nov 2016, 07:20
E uses the correct idiom "assisting ... in distinguishing"


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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 29 Nov 2016, 10:16
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


As far as i know, that of for single noun while those of for plural noun
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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 30 Nov 2016, 01:28
Exactly. "Those" is just the plural form of "that."
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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 02 Aug 2017, 21:25
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.


Quote:
(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

'This' is used as an adjective, as per the GMAT. So what's 'this' referring to here, 'assists'? It cannot as that is a verb. Both of these are OUT!


Quote:
(C) which apparently assists flies that taste the hydrocarbons on prospective mates in being able to distinguish their own species from

Courtship assists flies? No. It's actually the presence of hydrocarbons. Plus that 'being able to' can be avoided. This is OUT!


Quote:
(D) apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

Hydrocarbons assist flies to taste hydrocarbons to identify the mate? This distorts the entire meaning as it states intent on part of the flies. Plus 'those of' is not required. This is OUT!


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

This is the right answer.
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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 26 Apr 2018, 05:22
sondenso 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 taste 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


A. "This" is used as an adjective here, and it should modify a noun. But in this sentence "this" is wrongly modifying a verb "assists".

B. Same as A.

C. "which" is modifying "courtship" here.

D. Modification error : it says "something is assisting flies to taste the hydrocarbons", and this is wrong.

E. Correct.

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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe  [#permalink]

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New post 20 Feb 2019, 10:18
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Re: Hydrocarbons, with which fruit flies perfume themselves in species-spe   [#permalink] 20 Feb 2019, 10:18

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