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# A substance derived from the Madagascar periwinkle, which

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24 Apr 2012, 01:20
I chose E also. Just wondering if derivative of is an idiom.
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24 Apr 2012, 01:26
hfbamafan wrote:
I chose E also. Just wondering if derivative of is an idiom.

I dont think its the case
the usage
derivative for
derivative--> noun
derivative to
etc are also correct; it is just dependent on the context of the sentence.

In this case, other issues are prominent enough to nullify the case of idiomatic construction.
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24 Apr 2012, 02:25
Derivative cannot be grown directly ... ofcourse it is the Madagascar periwinkle which is grown and not its derivative so The Madagascar periwinkle will be the subject - ANS : E
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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19 Sep 2012, 10:25
The original sentence sounds like the derivative itself is cultivated in China! ruling out E, which changes the intended meaning!
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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19 Sep 2012, 11:56
shikhar wrote:
33. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.
(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,
(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle,
(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,
(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that
(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,

The best suitable option is C according to me.
Though C is also wrong because it uses ",which " that makes the modifier non essential but it is supposeto be essential.

OA is E in which a derivative modifies The madgascar periwinkle which is wrong

Hi Shikhar-

Why don't we break the answer choices one by one and then zero-in on the best choice?

Lets come to option A- If you see the words marked in red- We cannot make out what these words are modifying (ambiguous)
Now option B- Just by looking at it you know the construction is wrong
Option D- The use of that is ambigous here.
Otion C- The thumb rule is 'which' must refer to the noun preceding the comma. In this case it looks ambigous
Option E- This fits best and also the sentence is more meaningful when compared to option C
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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06 Aug 2014, 18:31
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anonymousvn wrote:
A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.

(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,
(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle,
(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,
(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that
(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients

OA is E. Please explain why? I go with C

This sentence talks about something that is cultivated in China. We have two object here: Madagascar periwinkle and substance. Thus, Only Madagascar periwinkle can be cultivated --> A, B & C are eliminated.
D is wrong because of "that".
E is precise and correct: "a derivative of which..." correctly modifies "the Madagascar periwinkle".
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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31 Dec 2014, 13:37
I got E too. It's the only one that "sounds" logical, non-redundant and flows properly.
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17 Aug 2015, 12:08
periwinkle means plants so only plants can be cultvated so E
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19 Aug 2015, 08:32
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The whole idea is below:

Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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08 Mar 2016, 19:43
20. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.

I believe understanding the meaning is crucial while solving this question..I cracked it under 1 minute...
A substance cannot be cultivated, thus, we need to look for an answer choice that would tell us that a tree or smth that can BE cultivated is actually cultivated.
only 1 answer choice is correctly written.

a. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,
meaning error - a substance cannot be cultivated

b. A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle
same error. + a derivative is useful - but we need to specify what kind of derivative before the long modifier..

c. A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients
same meaning error.

d. The Madagascar periwinkle has a derivative which has proved useful in decreasing
strange one..I believe not written as needed.. nonetheless we don't have a subject for the verb is cultivated, because the periwinkle has a verb - has, which is not properly connected to the other verb.

e. The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,
good.
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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08 Jul 2016, 06:02
Okay...So this question also falls under "Meaning" category... Good question... Only applying grammar rules isn't enough... atleast here.
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10 Jul 2016, 03:43
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Hi All,

I typically use the standard 3 step approach suggested by egmat :

Meaning analysis:

A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.

Imagine that the wheat plant is cultivated and the flour is useful for a treatment. Now flour is a derivative of the plant, can the flour be cultivated ?

Now based on this analogy lets understand the original question:

What is useful in decreasing mortality ?
The derivative

What is cultivated ?

Error Analysis:

1. "from the madagascar periwinkle, which has proved useful" --> "Which" always refer to the immediate preceding noun which in this case is the periwinkle. As per our meaning analysis "the derivative" is what is useful
2. " A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated " --> The striked out portion is providing more information about periwinkle and should be ignored to understand what is cultivated. A substance derived, ..., is cultivated --> This is incorrect as per our analysis

(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,--> As pointed out in the error analysis

(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle, --> A Derivative,..., is cultivated --> Incorrect as pointed in the error analysis.

(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,--> Derivative is cultivated--> As pointed in the error analysis, this distorts the meaning

(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that --> "that" has a hanging precedent noun. In this statement "that" can refer to patients

(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients, --> This correctly addresses the mistakes.

I hope this is helpful !

Regards,
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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12 Oct 2016, 08:08
comma is missing at the end in option 'E' , Moderators please correct
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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23 Feb 2017, 02:57
anje29 wrote:
comma is missing at the end in option 'E' , Moderators please correct

I don't think a comma is needed at the end of the answer for E. If there were to be a comma, the meaning of the sentence will be the same as answer C. That said, I feel like the way the answer is worded is really bad . Alas it is a meaning based question.
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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23 Feb 2017, 07:00
Oh myyy..

I did search on the net and found out that "Madagascar periwinkle" is a plant.
Hence only option E does make sense for the cultivation in China
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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27 Feb 2017, 22:53
Mimster wrote:
anje29 wrote:
comma is missing at the end in option 'E' , Moderators please correct

I don't think a comma is needed at the end of the answer for E. If there were to be a comma, the meaning of the sentence will be the same as answer C. That said, I feel like the way the answer is worded is really bad . Alas it is a meaning based question.

Yes comma is needed as the magadascar prewinkle doesn't have verb . the phrase after the comma is modifier and should end in comma. Currently the subject 'the magadascar prewinkle' doesn't have verb.
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Re: A substance derived from the Madagascar periwinkle, which has proved u [#permalink]

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27 Jun 2017, 06:45
Merged topics. Please, search before posting questions!
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26 Aug 2017, 00:22
Merged topics. Please, search before posting questions!
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23 Sep 2017, 07:29
This concept is based on the understanding of Madagascar periwinkle.

As the sentence talks about some derivative (or substance) - it is logical that we cannot cultivate a substance.

Hence, logically "is cultivated" refers to "Madagascar periwinkle" - Hence - THe only option that gives us this choice is E
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27 Sep 2017, 00:19
anonymousvn wrote:
A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.

(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,

(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle

(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients

(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing

(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,

Option A-Substance is not cultivated instead Periwinkle is cultivated

Option B -Derivative is not cultivated-statement b/w commas could be ignored.

Option C-Madagascar periwinkle derivative is not cultivated

Option D-Wrong construction

Option E-correct-Modifier between the commas correctly modifying Periwinkle, also if we ignore the statement between the comma, the sentence comes out to be Madagascar periwinkle is cultivated in china
Re: A substance derived from the Madagascar periwinkle, which   [#permalink] 27 Sep 2017, 00:19

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