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# Scientists believe that unlike the males of most species of moth, the

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Re: Scientists believe that unlike the males of most species of moth, the  [#permalink]

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16 Jun 2018, 10:37
vivektripathi wrote:
Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.

(A) by the use of acoustical signals, but not olfactory ones, and they attract

(B) by the use of acoustical signals instead of using olfactory ones, and attracting

(C) by using acoustical signals, not using olfactory ones, and by attracting

(D) using acoustical signals, rather than olfactory ones, and attract

(E) using acoustical signals, but not olfactory ones, and attracting

idea is to make "call" and "attract" parallel. Only option D does that.

(A) by the use of acoustical signals, but not olfactory ones, and they attract

(B) by the use of acoustical signals instead of using olfactory ones, and attracting

(C) by using acoustical signals, not using olfactory ones, and by attracting

(D) using acoustical signals, rather than olfactory ones, and attract

(E) using acoustical signals, but not olfactory ones, and attracting

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Re: Scientists believe that unlike the males of most species of moth, the  [#permalink]

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17 Jun 2018, 17:47
shekharvineet wrote:
Pkit wrote:
Scientists believe that unlike the males of most species of moth, the male whistling moths of Numbing, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.

a) by the use of acoustical signals, but not olfactory ones, and they attract
b) by the use of acoustical signals instead of using olfactory ones, and attracting
c) by using acoustical signals, not using olfactory ones, and by attracting
d) using acoustical signals, rather than olfactory ones, and attract
e) using acoustical signals, but not olfactory ones, and attracting

I will go for E.
A is incorrect as there is pronoun ambiguity "they" Moreover, there is no need to use "by"
B is oncorrect because of faulty parallelism
C is out for parallelism
D is out for the same reason.
E is correct. Maintains correct parallelism Moreover, you also have to ensure that the original meaning of the sentence is retained in the correct answer choice. "Instead" and "rather" are not the correct words in this context as both of them have a different meaning than "but". Also, the use of "by" is unnecessary as it makes the sentence more wordier.

Hii Shekharvineet,
Here the parallel elements are "Call female moths" and "attract them". We can't go for a choice with "attracting" as it breaks parallelism.
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Re: Scientists believe that unlike the males of most species of moth, the  [#permalink]

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26 Jul 2018, 19:39
I think that "by the use"is wrong grammatically, not idiomatic
we have to use 'with' before a noun to show a method of a main verb

I write with a pen
I learn gmat with a good spirit

we do not use "by" , anyone know, pls, show it here

we can use "by doing" or "doing" to show a method of a main verb in the main clause.

we can use "by" showing a method of a noun

the extraction by the use of chemicals is good
requirement by the program is high

those sentences possibly is correct
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Re: Scientists believe that unlike the males of most species of moth, the  [#permalink]

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14 Aug 2018, 02:22
vivektripathi wrote:
Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.

(A) by the use of acoustical signals, but not olfactory ones, and they attract

(B) by the use of acoustical signals instead of using olfactory ones, and attracting

(C) by using acoustical signals, not using olfactory ones, and by attracting

(D) using acoustical signals, rather than olfactory ones, and attract

(E) using acoustical signals, but not olfactory ones, and attracting

Correct option along with the non-underlined portion-

Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them using acoustical signals, rather than olfactory ones, and that attract their mates during the day, rather than at night.

My doubt is that- Why we dont need THAT (marked in red) for parallelism?

It would be great if someone can clarify it.

Regards,
Tamal
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Re: Scientists believe that unlike the males of most species of moth, the  [#permalink]

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08 Dec 2018, 09:31
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Quote:
Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them using acoustical signals, rather than olfactory ones, and that attract their mates during the day, rather than at night.

Let us now parse this sentence.

1. Scientists believe --- The main clause

2. That -- a subordinate conjunction starting another dependent clause -- The 'that' here is a connector and not a relative pronoun.

3. unlike the males of most species of moth, ---- An introductory prepositional modifier

4. the male whistling moths of Nambung, Australia, call female moths to them using acoustical signals, rather than olfactory ones -- This is the first act of the subordinate clause sought to be introduced by the connector 'that', which we initially spoke about.

5. And attract their mates during the day, rather than at night. -- This is the second act done by the male moths. The parallelism lies between two verbs namely "call and attract."

If we now introduce another 'that' before attract, what will it refer to and more importantly be parallel to? If there is a verb after that' in any other place and if it is also done by the moths, then they will be parallel.

Actually, the intrusion of 'that' before attract, may only spoil the existing parallelism. You may notice the left part of 'and' is a clause while the right part is a noun -phrase.

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Re: Scientists believe that unlike the males of most species of moth, the &nbs [#permalink] 08 Dec 2018, 09:31

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